Do ignore empty recipients when checking names
[modest] / src / modest-text-utils.c
index f01e706..fb4da84 100644 (file)
  */
 
 
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif /*_GNU_SOURCE*/
+#include <string.h> /* for strcasestr */
+
+
 #include <glib.h>
-#include <string.h>
 #include <stdlib.h>
 #include <glib/gi18n.h>
 #include <regex.h>
 #include <modest-tny-platform-factory.h>
 #include <modest-text-utils.h>
 #include <modest-runtime.h>
-
+#include <ctype.h>
 
 #ifdef HAVE_CONFIG_H
 #include <config.h>
 #endif /*HAVE_CONFIG_H */
 
 /* defines */
-#define FORWARD_STRING _("-----Forwarded Message-----")
-#define FROM_STRING _("From:")
-#define SENT_STRING _("Sent:")
-#define TO_STRING _("To:")
-#define        SUBJECT_STRING _("Subject:")
+#define FORWARD_STRING _("mcen_ia_editor_original_message")
+#define FROM_STRING _("mail_va_from")
+#define SENT_STRING _("mcen_fi_message_properties_sent")
+#define TO_STRING _("mail_va_to")
+#define        SUBJECT_STRING _("mail_va_subject")
 #define EMPTY_STRING ""
 
 /*
@@ -75,14 +81,40 @@ struct _url_match_t {
        const gchar* prefix;
 };
 
+
+/*
+ * we mark the ampersand with \007 when converting text->html
+ * because after text->html we do hyperlink detecting, which
+ * could be screwed up by the ampersand.
+ * ie. 1<3 ==> 1\007lt;3
+ */
+#define MARK_AMP '\007'
+#define MARK_AMP_STR "\007"
+
+/* mark &amp; separately, because they are parts of urls.
+ * ie. a&b => a\006amp;b, but a>b => a\007gt;b
+ *
+ * we need to handle '&' separately, because it can be part of URIs
+ * (as in href="http://foo.bar?a=1&b=1"), so inside those URIs
+ * we need to re-replace \006amp; with '&' again, while outside uri's
+ * it will be '&amp;'
+ * 
+ * yes, it's messy, but a consequence of doing text->html first, then hyperlinkify
+ */
+#define MARK_AMP_URI '\006'
+#define MARK_AMP_URI_STR "\006"
+
+
+/* note: match MARK_AMP_URI_STR as well, because after txt->html, a '&' will look like $(MARK_AMP_URI_STR)"amp;" */
 #define MAIL_VIEWER_URL_MATCH_PATTERNS  {                              \
-       { "(file|rtsp|http|ftp|https)://[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]+[-A-Za-z0-9_$%&=?/~#]",\
+       { "(feed:|)(file|rtsp|http|ftp|https|mms|mmsh|webcal|feed|rtsp|rdp|lastfm|sip)://[-a-z0-9_$.+!*(),;:@%=\?/~#&" MARK_AMP_URI_STR \
+                       "]+[-a-z0-9_$%&" MARK_AMP_URI_STR "=?/~#]",     \
          NULL, NULL },\
-       { "www\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
+       { "www\\.[-a-z0-9_$.+!*(),;:@%=?/~#" MARK_AMP_URI_STR "]+[-a-z0-9_$%" MARK_AMP_URI_STR "=?/~#]",\
                        NULL, "http://" },                              \
-       { "ftp\\.[-a-z0-9.]+[-a-z0-9](:[0-9]*)?(/[-A-Za-z0-9_$.+!*(),;:@%&=?/~#]*[^]}\\),?!;:\"]?)?",\
+       { "ftp\\.[-a-z0-9_$.+!*(),;:@%=?/~#" MARK_AMP_URI_STR "]+[-a-z0-9_$%" MARK_AMP_URI_STR "=?/~#]",\
          NULL, "ftp://" },\
-       { "(voipto|callto|chatto|jabberto|xmpp):[-_a-z@0-9.\\+]+", \
+       { "(jabberto|voipto|sipto|sip|chatto|skype|xmpp):[-_a-z@0-9.+]+", \
           NULL, NULL},                                             \
        { "mailto:[-_a-z0-9.\\+]+@[-_a-z0-9.]+",                    \
          NULL, NULL},\
@@ -90,16 +122,30 @@ struct _url_match_t {
          NULL, "mailto:"}\
        }
 
+const gchar account_title_forbidden_chars[] = {
+       '\\', '/', ':', '*', '?', '\'', '<', '>', '|', '^'
+};
+const gchar folder_name_forbidden_chars[] = {
+       '<', '>', ':', '\'', '/', '\\', '|', '?', '*', '^', '%', '$', '#', '&'
+};
+const gchar user_name_forbidden_chars[] = {
+       '<', '>'
+};
+const guint ACCOUNT_TITLE_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (account_title_forbidden_chars);
+const guint FOLDER_NAME_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (folder_name_forbidden_chars);
+const guint USER_NAME_FORBIDDEN_CHARS_LENGTH = G_N_ELEMENTS (user_name_forbidden_chars);
+
 /* private */
 static gchar*   cite                    (const time_t sent_date, const gchar *from);
-static void     hyperlinkify_plain_text (GString *txt);
+static void     hyperlinkify_plain_text (GString *txt, gint offset);
 static gint     cmp_offsets_reverse     (const url_match_t *match1, const url_match_t *match2);
-static GSList*  get_url_matches         (GString *txt);
+static GSList*  get_url_matches         (GString *txt, gint offset);
 
 static GString* get_next_line           (const char *b, const gsize blen, const gchar * iter);
 static int      get_indent_level        (const char *l);
-static void     unquote_line            (GString * l);
-static void     append_quoted           (GString * buf, const int indent, const GString * str, 
+static void     unquote_line            (GString * l, const gchar *quote_symbol);
+static void     append_quoted           (GString * buf, const gchar *quote_symbol,
+                                        const int indent, const GString * str, 
                                         const int cutpoint);
 static int      get_breakpoint_utf8     (const gchar * s, const gint indent, const gint limit);
 static int      get_breakpoint_ascii    (const gchar * s, const gint indent, const gint limit);
@@ -117,6 +163,8 @@ static gchar*   modest_text_utils_quote_html       (const gchar *text,
                                                    GList *attachments,
                                                    int limit);
 static gchar*   get_email_from_address (const gchar *address);
+static void     remove_extra_spaces (gchar *string);
+
 
 
 /* ******************************************************************* */
@@ -161,18 +209,21 @@ modest_text_utils_cite (const gchar *text,
 {
        gchar *retval;
        gchar *tmp_sig;
-
+       
        g_return_val_if_fail (text, NULL);
        g_return_val_if_fail (content_type, NULL);
+       
+       if (!signature) {
+               tmp_sig = g_strdup (text);
+       } else {
+               tmp_sig = g_strconcat (text, "\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER, "\n", signature, NULL);
+       }
 
-       if (!signature)
-               retval = g_strdup ("");
-       else if (!strcmp(content_type, "text/html")) {
-               tmp_sig = g_strconcat ("\n", signature, NULL);
-               retval = modest_text_utils_convert_to_html_body(tmp_sig);
+       if (strcmp (content_type, "text/html") == 0) {
+               retval = modest_text_utils_convert_to_html_body (tmp_sig, -1, TRUE);
                g_free (tmp_sig);
        } else {
-               retval = g_strconcat ("\n", signature, NULL);
+               retval = tmp_sig;
        }
 
        return retval;
@@ -180,10 +231,12 @@ modest_text_utils_cite (const gchar *text,
 
 static gchar *
 forward_cite (const gchar *from,
-                   const gchar *sent,
-                   const gchar *to,
-                   const gchar *subject)
+             const gchar *sent,
+             const gchar *to,
+             const gchar *subject)
 {
+       g_return_val_if_fail (sent, NULL);
+       
        return g_strdup_printf ("%s\n%s %s\n%s %s\n%s %s\n%s %s\n", 
                                FORWARD_STRING, 
                                FROM_STRING, (from)?from:"",
@@ -229,6 +282,13 @@ modest_text_utils_strftime(char *s, gsize max, const char *fmt, time_t timet)
 {
         struct tm tm;
 
+       /* To prevent possible problems in strftime that could leave
+          garbage in the s variable */
+       if (s)
+               s[0] = '\0';
+       else
+               return 0;
+
        /* does not work on old maemo glib: 
         *   g_date_set_time_t (&date, timet);
         */
@@ -237,29 +297,117 @@ modest_text_utils_strftime(char *s, gsize max, const char *fmt, time_t timet)
 }
 
 gchar *
-modest_text_utils_derived_subject (const gchar *subject, const gchar *prefix)
+modest_text_utils_derived_subject (const gchar *subject, gboolean is_reply)
 {
-       gchar *tmp;
+       gchar *tmp, *subject_dup, *retval, *prefix;
+       const gchar *untranslated_prefix;
+       gint prefix_len, untranslated_prefix_len;
+       gboolean translated_found = FALSE;
+       gboolean first_time;
 
-       g_return_val_if_fail (prefix, NULL);
-       
-       if (!subject)
-               return g_strdup (prefix);
+       if (!subject || subject[0] == '\0')
+               subject = _("mail_va_no_subject");
 
-       tmp = g_strchug (g_strdup (subject));
+       subject_dup = g_strdup (subject);
+       tmp = g_strchug (subject_dup);
 
-       if (!strncmp (tmp, prefix, strlen (prefix))) {
-               return tmp;
+       prefix = (is_reply) ? _("mail_va_re") : _("mail_va_fw");
+       prefix = g_strconcat (prefix, ":", NULL);
+       prefix_len = g_utf8_strlen (prefix, -1);
+
+       untranslated_prefix =  (is_reply) ? "Re:" : "Fw:";
+       untranslated_prefix_len = 3;
+
+       /* We do not want things like "Re: Re: Re:" or "Fw: Fw:" so
+          delete the previous ones */
+       first_time = TRUE;
+       do {
+               if (g_str_has_prefix (tmp, prefix)) {
+                       tmp += prefix_len;
+                       tmp = g_strchug (tmp);
+                       /* Do not consider translated prefixes in the
+                          middle of a Re:Re:..Re: like sequence */
+                       if (G_UNLIKELY (first_time))
+                               translated_found = TRUE;
+               } else if (g_str_has_prefix (tmp, untranslated_prefix)) {
+                       tmp += untranslated_prefix_len;
+                       tmp = g_strchug (tmp);
+               } else {
+                       gchar *prefix_down, *tmp_down;
+
+                       /* We need this to properly check the cases of
+                          some clients adding FW: instead of Fw: for
+                          example */
+                       prefix_down = g_utf8_strdown (prefix, -1);
+                       tmp_down = g_utf8_strdown (tmp, -1);
+                       if (g_str_has_prefix (tmp_down, prefix_down)) {
+                               tmp += prefix_len;
+                               tmp = g_strchug (tmp);
+                               g_free (prefix_down);
+                               g_free (tmp_down);
+                       } else {
+                               g_free (prefix_down);
+                               g_free (tmp_down);
+                               break;
+                       }
+               }
+               first_time = FALSE;
+       } while (tmp);
+
+       if (!g_strcmp0 (subject, tmp)) {
+               /* normal case */
+               retval = g_strdup_printf ("%s %s", untranslated_prefix, tmp);
        } else {
-               g_free (tmp);
-               return g_strdup_printf ("%s %s", prefix, subject);
+               if (translated_found) {
+                       /* Found a translated prefix, i.e, "VS:" in Finish */
+                       retval = g_strdup_printf ("%s %s", prefix, tmp);
+               } else {
+                       retval = g_strdup_printf ("%s %s", untranslated_prefix, tmp);
+               }
        }
+       g_free (subject_dup);
+       g_free (prefix);
+
+       return retval;
 }
 
+
+/* Performs a case-insensitive strstr for ASCII strings */
+static const gchar *
+ascii_stristr(const gchar *haystack, const gchar *needle)
+{
+       int needle_len;
+       int haystack_len;
+       const gchar *pos;
+       const gchar *max_pos;
+
+       if (haystack == NULL || needle == NULL) {
+               return haystack;  /* as in strstr */
+       }
+
+       needle_len = strlen(needle);
+
+       if (needle_len == 0) {
+               return haystack;  /* as in strstr */
+       }
+
+       haystack_len = strlen(haystack);
+       max_pos = haystack + haystack_len - needle_len;
+
+       for (pos = haystack; pos <= max_pos; pos++) {
+               if (g_ascii_strncasecmp (pos, needle, needle_len) == 0) {
+                       return pos;
+               }
+       }
+
+       return NULL;
+}
+
+
 gchar*
 modest_text_utils_remove_address (const gchar *address_list, const gchar *address)
 {
-       gchar *dup, *token, *ptr, *result;
+       gchar *dup, *token, *ptr = NULL, *result;
        GString *filtered_emails;
        gchar *email_address;
 
@@ -269,21 +417,21 @@ modest_text_utils_remove_address (const gchar *address_list, const gchar *addres
                return g_strdup (address_list);
 
        email_address = get_email_from_address (address);
-       
+
        /* search for substring */
-       if (!strstr ((const char *) address_list, (const char *) email_address)) {
+       if (!ascii_stristr ((const char *) address_list, (const char *) email_address)) {
                g_free (email_address);
                return g_strdup (address_list);
        }
 
        dup = g_strdup (address_list);
        filtered_emails = g_string_new (NULL);
-       
+
        token = strtok_r (dup, ",", &ptr);
 
        while (token != NULL) {
                /* Add to list if not found */
-               if (!strstr ((const char *) token, (const char *) email_address)) {
+               if (!ascii_stristr ((const char *) token, (const char *) email_address)) {
                        if (filtered_emails->len == 0)
                                g_string_append_printf (filtered_emails, "%s", g_strstrip (token));
                        else
@@ -301,48 +449,110 @@ modest_text_utils_remove_address (const gchar *address_list, const gchar *addres
        return result;
 }
 
+
+gchar*
+modest_text_utils_remove_duplicate_addresses (const gchar *address_list)
+{
+       GSList *addresses, *cursor;
+       GHashTable *table;
+       gchar *new_list = NULL;
+       
+       g_return_val_if_fail (address_list, NULL);
+
+       table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+       addresses = modest_text_utils_split_addresses_list (address_list);
+
+       cursor = addresses;
+       while (cursor) {
+               const gchar* address = (const gchar*)cursor->data;
+
+               /* We need only the email to just compare it and not
+                  the full address which would make "a <a@a.com>"
+                  different from "a@a.com" */
+               const gchar *email = get_email_from_address (address);
+
+               /* ignore the address if already seen */
+               if (g_hash_table_lookup (table, email) == 0) {
+                       gchar *tmp;
+
+                       /* Include the full address and not only the
+                          email in the returned list */
+                       if (!new_list) {
+                               tmp = g_strdup (address);
+                       } else {
+                               tmp = g_strjoin (",", new_list, address, NULL);
+                               g_free (new_list);
+                       }
+                       new_list = tmp;
+                       
+                       g_hash_table_insert (table, (gchar*)email, GINT_TO_POINTER(1));
+               }
+               cursor = g_slist_next (cursor);
+       }
+
+       g_hash_table_unref (table);
+       g_slist_foreach (addresses, (GFunc)g_free, NULL);
+       g_slist_free (addresses);
+
+       if (new_list == NULL)
+               new_list = g_strdup ("");
+
+       return new_list;
+}
+
+
 static void
-modest_text_utils_convert_buffer_to_html (GString *html, const gchar *data)
+modest_text_utils_convert_buffer_to_html_start (GString *html, const gchar *data, gssize n)
 {
-       guint            i;
+       guint           i;
        gboolean        space_seen = FALSE;
-       gsize           len;
        guint           break_dist = 0; /* distance since last break point */
 
-       len = strlen (data);
+       if (n == -1)
+               n = strlen (data);
 
        /* replace with special html chars where needed*/
-       for (i = 0; i != len; ++i)  {
-               char kar = data[i];
+       for (i = 0; i != n; ++i)  {
+               guchar kar = data[i];
                
                if (space_seen && kar != ' ') {
-                       g_string_append_c (html, ' ');
+                       g_string_append (html, "&#32;");
                        space_seen = FALSE;
                }
                
                /* we artificially insert a breakpoint (newline)
                 * after 256, to make sure our lines are not so long
                 * they will DOS the regexping later
+                * Also, check that kar is ASCII to make sure that we
+                * don't break a UTF8 char in two
                 */
-               if (++break_dist == 256) {
+               if (++break_dist >= 256 && kar < 127) {
                        g_string_append_c (html, '\n');
                        break_dist = 0;
                }
                
                switch (kar) {
-               case 0:  break; /* ignore embedded \0s */       
-               case '<'  : g_string_append (html, "&lt;");   break;
-               case '>'  : g_string_append (html, "&gt;");   break;
-               case '&'  : g_string_append (html, "&amp;");  break;
-               case '"'  : g_string_append (html, "&quot;");  break;
-               case '\'' : g_string_append (html, "&apos;"); break;
-               case '\n' : g_string_append (html, "<br>\n");              break_dist= 0; break;
-               case '\t' : g_string_append (html, "&nbsp;&nbsp;&nbsp; "); break_dist=0; break; /* note the space at the end*/
+               case 0:
+               case MARK_AMP:
+               case MARK_AMP_URI:      
+                       /* this is a temp place holder for '&'; we can only
+                               * set the real '&' after hyperlink translation, otherwise
+                               * we might screw that up */
+                       break; /* ignore embedded \0s and MARK_AMP */   
+               case '<'  : g_string_append (html, MARK_AMP_STR "lt;");   break;
+               case '>'  : g_string_append (html, MARK_AMP_STR "gt;");   break;
+               case '&'  : g_string_append (html, MARK_AMP_URI_STR "amp;");  break; /* special case */
+               case '"'  : g_string_append (html, MARK_AMP_STR "quot;");  break;
+
+               /* don't convert &apos; --> wpeditor will try to re-convert it... */    
+               //case '\'' : g_string_append (html, "&apos;"); break;
+               case '\n' : g_string_append (html, "<br>\n");break_dist= 0; break;
+               case '\t' : g_string_append (html, MARK_AMP_STR "nbsp;" MARK_AMP_STR "nbsp;" MARK_AMP_STR "nbsp; ");
+                       break_dist=0; break; /* note the space at the end*/
                case ' ':
                        break_dist = 0;
                        if (space_seen) { /* second space in a row */
                                g_string_append (html, "&nbsp; ");
-                               space_seen = FALSE;
                        } else
                                space_seen = TRUE;
                        break;
@@ -352,11 +562,25 @@ modest_text_utils_convert_buffer_to_html (GString *html, const gchar *data)
        }
 }
 
+
+static void
+modest_text_utils_convert_buffer_to_html_finish (GString *html)
+{
+       int i;
+       /* replace all our MARK_AMPs with real ones */
+       for (i = 0; i != html->len; ++i)
+               if ((html->str)[i] == MARK_AMP || (html->str)[i] == MARK_AMP_URI)
+                       (html->str)[i] = '&';
+}
+
+
 gchar*
 modest_text_utils_convert_to_html (const gchar *data)
 {
        GString         *html;      
        gsize           len;
+
+       g_return_val_if_fail (data, NULL);
        
        if (!data)
                return NULL;
@@ -370,142 +594,192 @@ modest_text_utils_convert_to_html (const gchar *data)
                                "</head>"
                                "<body>");
 
-       modest_text_utils_convert_buffer_to_html (html, data);
+       modest_text_utils_convert_buffer_to_html_start (html, data, -1);
        
        g_string_append (html, "</body></html>");
 
        if (len <= HYPERLINKIFY_MAX_LENGTH)
-               hyperlinkify_plain_text (html);
+               hyperlinkify_plain_text (html, 0);
 
+       modest_text_utils_convert_buffer_to_html_finish (html);
+       
        return g_string_free (html, FALSE);
 }
 
 gchar *
-modest_text_utils_convert_to_html_body (const gchar *data)
+modest_text_utils_convert_to_html_body (const gchar *data, gssize n, gboolean hyperlinkify)
 {
        GString         *html;      
-       gsize           len;
-       
+
+       g_return_val_if_fail (data, NULL);
+
        if (!data)
                return NULL;
 
-       len = strlen (data);
-       html = g_string_sized_new (1.5 * len);  /* just a  guess... */
+       if (n == -1) 
+               n = strlen (data);
+       html = g_string_sized_new (1.5 * n);    /* just a  guess... */
 
-       modest_text_utils_convert_buffer_to_html (html, data);
+       modest_text_utils_convert_buffer_to_html_start (html, data, n);
 
-       if (len < HYPERLINKIFY_MAX_LENGTH)
-               hyperlinkify_plain_text (html);
+       if (hyperlinkify && (n < HYPERLINKIFY_MAX_LENGTH))
+               hyperlinkify_plain_text (html, 0);
 
+       modest_text_utils_convert_buffer_to_html_finish (html);
+       
        return g_string_free (html, FALSE);
 }
 
 void
 modest_text_utils_get_addresses_indexes (const gchar *addresses, GSList **start_indexes, GSList **end_indexes)
 {
-       gchar *current, *start, *last_blank;
-       gint start_offset = 0, current_offset = 0;
+       GString *str;
+       gchar *start, *cur;
 
-       g_return_if_fail (start_indexes != NULL);
-       g_return_if_fail (end_indexes != NULL);
+       if (!addresses)
+               return;
 
-       start = (gchar *) addresses;
-       current = start;
-       last_blank = start;
+       if (strlen (addresses) == 0)
+               return;
 
-       while (*current != '\0') {
-               if ((start == current)&&((*current == ' ')||(*current == ',')||(*current == ';'))) {
-                       start = g_utf8_next_char (start);
-                       start_offset++;
-                       last_blank = current;
-               } else if ((*current == ',')||(*current == ';')) {
+       str = g_string_new ("");
+       start = (gchar*) addresses;
+       cur = (gchar*) addresses;
+
+       for (cur = start; *cur != '\0'; cur = g_utf8_next_char (cur)) {
+               if (*cur == ',' || *cur == ';') {
                        gint *start_index, *end_index;
-                       start_index = g_new0(gint, 1);
-                       end_index = g_new0(gint, 1);
-                       *start_index = start_offset;
-                       *end_index = current_offset;
+                       gchar *next_char = g_utf8_next_char (cur);
+
+                       if (!g_utf8_strchr (start, (cur - start + 1), g_utf8_get_char ("@")) &&
+                           next_char && *next_char != '\n' && *next_char != '\0')
+                               continue;
+
+                       start_index = g_new0 (gint, 1);
+                       end_index = g_new0 (gint, 1);
+                       *start_index = g_utf8_pointer_to_offset (addresses, start);
+                       *end_index = g_utf8_pointer_to_offset (addresses, cur);;
                        *start_indexes = g_slist_prepend (*start_indexes, start_index);
                        *end_indexes = g_slist_prepend (*end_indexes, end_index);
-                       start = g_utf8_next_char (current);
-                       start_offset = current_offset + 1;
-                       last_blank = start;
-               } else if (*current == '"') {
-                       current = g_utf8_next_char (current);
-                       current_offset ++;
-                       while ((*current != '"')&&(*current != '\0')) {
-                               current = g_utf8_next_char (current);
-                               current_offset ++;
-                       }
+                       start = g_utf8_next_char (cur);
                }
-                               
-               current = g_utf8_next_char (current);
-               current_offset ++;
        }
 
-       if (start != current) {
-                       gint *start_index, *end_index;
-                       start_index = g_new0(gint, 1);
-                       end_index = g_new0(gint, 1);
-                       *start_index = start_offset;
-                       *end_index = current_offset;
-                       *start_indexes = g_slist_prepend (*start_indexes, start_index);
-                       *end_indexes = g_slist_prepend (*end_indexes, end_index);
+       if (start != cur) {
+               gint *start_index, *end_index;
+               start_index = g_new0 (gint, 1);
+               end_index = g_new0 (gint, 1);
+               *start_index = g_utf8_pointer_to_offset (addresses, start);
+               *end_index = g_utf8_pointer_to_offset (addresses, cur);;
+               *start_indexes = g_slist_prepend (*start_indexes, start_index);
+               *end_indexes = g_slist_prepend (*end_indexes, end_index);
        }
-       
-       *start_indexes = g_slist_reverse (*start_indexes);
-       *end_indexes = g_slist_reverse (*end_indexes);
 
-       return;
+       if (*start_indexes)
+               *start_indexes = g_slist_reverse (*start_indexes);
+       if (*end_indexes)
+               *end_indexes = g_slist_reverse (*end_indexes);
 }
 
+
 GSList *
 modest_text_utils_split_addresses_list (const gchar *addresses)
 {
-       gchar *current, *start, *last_blank;
-       GSList *result = NULL;
-
-       start = (gchar *) addresses;
-       current = start;
-       last_blank = start;
-
-       while (*current != '\0') {
-               if ((start == current)&&((*current == ' ')||(*current == ',')||(*current == ';'))) {
-                       start = g_utf8_next_char (start);
-                       last_blank = current;
-               } else if ((*current == ',')||(*current == ';')) {
-                       gchar *new_address = NULL;
-                       new_address = g_strndup (start, current - last_blank);
-                       result = g_slist_prepend (result, new_address);
-                       start = g_utf8_next_char (current);
-                       last_blank = start;
-               } else if (*current == '\"') {
-                       if (current == start) {
-                               current = g_utf8_next_char (current);
-                               start = g_utf8_next_char (start);
-                       }
-                       while ((*current != '\"')&&(*current != '\0'))
-                               current = g_utf8_next_char (current);
+       GSList *head;
+       const gchar *my_addrs = addresses;
+       const gchar *end;
+       gchar *addr;
+       gboolean after_at = FALSE;
+
+       g_return_val_if_fail (addresses, NULL);
+
+       /* skip any space, ',', ';' '\n' at the start */
+       while (my_addrs && (my_addrs[0] == ' ' || my_addrs[0] == ',' ||
+                           my_addrs[0] == ';' || my_addrs[0] == '\n'))
+              ++my_addrs;
+
+       /* are we at the end of addresses list? */
+       if (!my_addrs[0])
+               return NULL;
+
+       /* nope, we are at the start of some address
+        * now, let's find the end of the address */
+       end = my_addrs + 1;
+       while (end[0] && end[0] != ';' && !(after_at && end[0] == ',')) {
+               if (end[0] == '\"') {
+                       while (end[0] && end[0] != '\"')
+                               ++end;
                }
-                               
-               current = g_utf8_next_char (current);
+               if (end[0] == '@') {
+                       after_at = TRUE;
+               }
+               if ((end[0] && end[0] == '>')&&(end[1] && end[1] == ',')) {
+                       ++end;
+                       break;
+               }
+               ++end;
        }
 
-       if (start != current) {
-               gchar *new_address = NULL;
-               new_address = g_strndup (start, current - last_blank);
-               result = g_slist_prepend (result, new_address);
+       /* we got the address; copy it and remove trailing whitespace */
+       addr = g_strndup (my_addrs, end - my_addrs);
+       g_strchomp (addr);
+
+       remove_extra_spaces (addr);
+
+       head = g_slist_append (NULL, addr);
+       head->next = modest_text_utils_split_addresses_list (end); /* recurse */
+
+       return head;
+}
+
+gchar *
+modest_text_utils_join_addresses (const gchar *from,
+                                 const gchar *to,
+                                 const gchar *cc,
+                                 const gchar *bcc)
+{
+       GString *buffer;
+       gboolean add_separator = FALSE;
+
+       buffer = g_string_new ("");
+
+       if (from && strlen (from)) {
+               buffer = g_string_append (buffer, from);
+               add_separator = TRUE;
        }
+       if (to && strlen (to)) {
+               if (add_separator)
+                       buffer = g_string_append (buffer, "; ");
+               else
+                       add_separator = TRUE;
 
-       result = g_slist_reverse (result);
-       return result;
+               buffer = g_string_append (buffer, to);
+       }
+       if (cc && strlen (cc)) {
+               if (add_separator)
+                       buffer = g_string_append (buffer, "; ");
+               else
+                       add_separator = TRUE;
+
+               buffer = g_string_append (buffer, cc);
+       }
+       if (bcc && strlen (bcc)) {
+               if (add_separator)
+                       buffer = g_string_append (buffer, "; ");
+               else
+                       add_separator = TRUE;
+
+               buffer = g_string_append (buffer, bcc);
+       }
 
+       return g_string_free (buffer, FALSE);
 }
 
 void
 modest_text_utils_address_range_at_position (const gchar *recipients_list,
-                                            gint position,
-                                            gint *start,
-                                            gint *end)
+                                            guint position,
+                                            guint *start,
+                                            guint *end)
 {
        gchar *current = NULL;
        gint range_start = 0;
@@ -513,8 +787,12 @@ modest_text_utils_address_range_at_position (const gchar *recipients_list,
        gint index;
        gboolean is_quoted = FALSE;
 
+       g_return_if_fail (recipients_list);
+       g_return_if_fail (position < g_utf8_strlen(recipients_list, -1));
+               
        index = 0;
-       for (current = (gchar *) recipients_list; *current != '\0'; current = g_utf8_find_next_char (current, NULL)) {
+       for (current = (gchar *) recipients_list; *current != '\0';
+            current = g_utf8_find_next_char (current, NULL)) {
                gunichar c = g_utf8_get_char (current);
 
                if ((c == ',') && (!is_quoted)) {
@@ -538,6 +816,30 @@ modest_text_utils_address_range_at_position (const gchar *recipients_list,
                *end = range_end;
 }
 
+gchar *
+modest_text_utils_address_with_standard_length (const gchar *recipients_list)
+{
+       gchar ** splitted;
+       gchar ** current;
+       GString *buffer = g_string_new ("");
+
+       splitted = g_strsplit (recipients_list, "\n", 0);
+       current = splitted;
+       while (*current) {
+               gchar *line;
+               if (current != splitted)
+                       buffer = g_string_append_c (buffer, '\n');
+               line = g_strndup (*splitted, 1000);
+               buffer = g_string_append (buffer, line);
+               g_free (line);
+               current++;
+       }
+
+       g_strfreev (splitted);
+
+       return g_string_free (buffer, FALSE);
+}
+
 
 /* ******************************************************************* */
 /* ************************* UTILIY FUNCTIONS ************************ */
@@ -582,7 +884,7 @@ get_indent_level (const char *l)
        /*      if we hit the signature marker "-- ", we return -(indent + 1). This
         *      stops reformatting.
         */
-       if (strcmp (l, "-- ") == 0) {
+       if (strcmp (l, MODEST_TEXT_UTILS_SIGNATURE_MARKER) == 0) {
                return -1 - indent;
        } else {
                return indent;
@@ -590,15 +892,17 @@ get_indent_level (const char *l)
 }
 
 static void
-unquote_line (GString * l)
+unquote_line (GString * l, const gchar *quote_symbol)
 {
        gchar *p;
+       gint quote_len;
 
        p = l->str;
+       quote_len = strlen (quote_symbol);
        while (p[0]) {
-               if (p[0] == '>') {
-                       if (p[1] == ' ') {
-                               p++;
+               if (g_str_has_prefix (p, quote_symbol)) {
+                       if (p[quote_len] == ' ') {
+                               p += quote_len;
                        }
                } else {
                        break;
@@ -609,15 +913,19 @@ unquote_line (GString * l)
 }
 
 static void
-append_quoted (GString * buf, int indent, const GString * str,
+append_quoted (GString * buf, const gchar *quote_symbol,
+              int indent, const GString * str,
               const int cutpoint)
 {
        int i;
+       gchar *quote_concat;
 
        indent = indent < 0 ? abs (indent) - 1 : indent;
+       quote_concat = g_strconcat (quote_symbol, " ", NULL);
        for (i = 0; i <= indent; i++) {
-               g_string_append (buf, "> ");
+               g_string_append (buf, quote_concat);
        }
+       g_free (quote_concat);
        if (cutpoint > 0) {
                g_string_append_len (buf, str->str, cutpoint);
        } else {
@@ -706,32 +1014,25 @@ quoted_attachments (GList *attachments)
 
 }
 
-static gchar *
-modest_text_utils_quote_plain_text (const gchar *text, 
-                                   const gchar *cite, 
-                                   const gchar *signature,
-                                   GList *attachments,
-                                   int limit)
+static GString *
+modest_text_utils_quote_body (GString *output, const gchar *text,
+                             const gchar *quote_symbol,
+                             int limit)
 {
+
        const gchar *iter;
-       gint indent, breakpoint, rem_indent = 0;
-       GString *q, *l, *remaining;
        gsize len;
-       gchar *attachments_string = NULL;
-
-       /* remaining will store the rest of the line if we have to break it */
-       q = g_string_new ("\n");
-       q = g_string_append (q, cite);
-       q = g_string_append_c (q, '\n');
-       remaining = g_string_new ("");
+       gint indent, breakpoint, rem_indent = 0;
+       GString *l, *remaining;
 
        iter = text;
        len = strlen(text);
+       remaining = g_string_new ("");
        do {
                l = get_next_line (text, len, iter);
                iter = iter + l->len + 1;
                indent = get_indent_level (l->str);
-               unquote_line (l);
+               unquote_line (l, quote_symbol);
 
                if (remaining->len) {
                        if (l->len && indent == rem_indent) {
@@ -739,17 +1040,20 @@ modest_text_utils_quote_plain_text (const gchar *text,
                                g_string_prepend (l, remaining->str);
                        } else {
                                do {
+                                       gunichar remaining_first;
                                        breakpoint =
                                                get_breakpoint (remaining->str,
                                                                rem_indent,
                                                                limit);
-                                       append_quoted (q, rem_indent,
+                                       append_quoted (output, quote_symbol, rem_indent,
                                                       remaining, breakpoint);
                                        g_string_erase (remaining, 0,
                                                        breakpoint);
-                                       if (remaining->str[0] == ' ') {
-                                               g_string_erase (remaining, 0,
-                                                               1);
+                                       remaining_first = g_utf8_get_char_validated (remaining->str, remaining->len);
+                                       if (remaining_first != ((gunichar) -1)) {
+                                               if (g_unichar_isspace (remaining_first)) {
+                                                       g_string_erase (remaining, 0, g_utf8_next_char (remaining->str) - remaining->str);
+                                               }
                                        }
                                } while (remaining->len);
                        }
@@ -761,22 +1065,54 @@ modest_text_utils_quote_plain_text (const gchar *text,
                        g_string_erase (remaining, 0, 1);
                }
                rem_indent = indent;
-               append_quoted (q, indent, l, breakpoint);
+               append_quoted (output, quote_symbol, indent, l, breakpoint);
                g_string_free (l, TRUE);
        } while ((iter < text + len) || (remaining->str[0]));
 
-       attachments_string = quoted_attachments (attachments);
-       q = g_string_append (q, attachments_string);
-       g_free (attachments_string);
+       return output;
+}
+
+static gchar *
+modest_text_utils_quote_plain_text (const gchar *text, 
+                                   const gchar *cite, 
+                                   const gchar *signature,
+                                   GList *attachments,
+                                   int limit)
+{
+       GString *q;
+       gchar *attachments_string = NULL;
+
+       q = g_string_new ("");
 
        if (signature != NULL) {
-               q = g_string_append_c (q, '\n');
+               g_string_append_printf (q, "\n%s\n", MODEST_TEXT_UTILS_SIGNATURE_MARKER);
                q = g_string_append (q, signature);
        }
 
+       q = g_string_append (q, "\n");
+       q = g_string_append (q, cite);
+       q = g_string_append_c (q, '\n');
+
+       q = modest_text_utils_quote_body (q, text, ">", limit);
+
+       attachments_string = quoted_attachments (attachments);
+       q = g_string_append (q, attachments_string);
+       g_free (attachments_string);
+
        return g_string_free (q, FALSE);
 }
 
+static void
+quote_html_add_to_gstring (GString *string,
+                          const gchar *text)
+{
+       if (text && strcmp (text, "")) {
+               gchar *html_text = modest_text_utils_convert_to_html_body (text, -1, TRUE);
+               g_string_append_printf (string, "%s<br/>", html_text);
+               g_free (html_text);
+       }
+}
+
 static gchar*
 modest_text_utils_quote_html (const gchar *text, 
                              const gchar *cite, 
@@ -784,37 +1120,37 @@ modest_text_utils_quote_html (const gchar *text,
                              GList *attachments,
                              int limit)
 {
-       gchar *result = NULL;
-       gchar *signature_result = NULL;
-       const gchar *format = \
-               "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n" \
-               "<html>\n" \
-               "<body>\n" \
-               "<br/>%s<br/>" \
-               "<pre>%s<br/>%s<br/>%s</pre>\n" \
-               "</body>\n" \
-               "</html>\n";
-       gchar *attachments_string = NULL;
-       gchar *q_attachments_string = NULL;
-       gchar *q_cite = NULL;
-       gchar *html_text = NULL;
-
-       if (signature == NULL)
-               signature_result = g_strdup ("");
-       else
-               signature_result = modest_text_utils_convert_to_html_body (signature);
+       GString *result_string;
+
+       result_string = 
+               g_string_new ( \
+                             "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">\n" \
+                             "<html>\n"                                \
+                             "<body>\n<br/>\n");
+
+       if (text || cite || signature) {
+               GString *quoted_text;
+               g_string_append (result_string, "<pre>\n");
+               if (signature) {
+                       quote_html_add_to_gstring (result_string, MODEST_TEXT_UTILS_SIGNATURE_MARKER);
+                       quote_html_add_to_gstring (result_string, signature);
+               }
+               quote_html_add_to_gstring (result_string, cite);
+               quoted_text = g_string_new ("");
+               quoted_text = modest_text_utils_quote_body (quoted_text, (text) ? text : "", ">", limit);
+               quote_html_add_to_gstring (result_string, quoted_text->str);
+               g_string_free (quoted_text, TRUE);
+               if (attachments) {
+                       gchar *attachments_string = quoted_attachments (attachments);
+                       quote_html_add_to_gstring (result_string, attachments_string);
+                       g_free (attachments_string);
+               }
+               g_string_append (result_string, "</pre>");
+       }
+       g_string_append (result_string, "</body>");
+       g_string_append (result_string, "</html>");
 
-       attachments_string = quoted_attachments (attachments);
-       q_attachments_string = modest_text_utils_convert_to_html_body (attachments_string);
-       q_cite = modest_text_utils_convert_to_html_body (cite);
-       html_text = modest_text_utils_convert_to_html_body (text);
-       result = g_strdup_printf (format, signature_result, q_cite, html_text, q_attachments_string);
-       g_free (q_cite);
-       g_free (html_text);
-       g_free (attachments_string);
-       g_free (q_attachments_string);
-       g_free (signature_result);
-       return result;
+       return g_string_free (result_string, FALSE);
 }
 
 static gint 
@@ -823,34 +1159,86 @@ cmp_offsets_reverse (const url_match_t *match1, const url_match_t *match2)
        return match2->offset - match1->offset;
 }
 
+static gint url_matches_block = 0;
+static url_match_pattern_t patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
+static GMutex *url_patterns_mutex = NULL;
+
+
+static gboolean
+compile_patterns ()
+{
+       guint i;
+       const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
+       for (i = 0; i != pattern_num; ++i) {
+               patterns[i].preg = g_slice_new0 (regex_t);
+               
+               /* this should not happen */
+               if (regcomp (patterns[i].preg, patterns[i].regex,
+                            REG_ICASE|REG_EXTENDED|REG_NEWLINE) != 0) {
+                       g_warning ("%s: error in regexp:\n%s\n", __FUNCTION__, patterns[i].regex);
+                       return FALSE;
+               }
+       }
+       return TRUE;
+}
+
+static void 
+free_patterns ()
+{
+       guint i;
+       const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
+       for (i = 0; i != pattern_num; ++i) {
+               regfree (patterns[i].preg);
+               g_slice_free  (regex_t, patterns[i].preg);
+       } /* don't free patterns itself -- it's static */
+}
+
+void
+modest_text_utils_hyperlinkify_begin (void)
+{
+
+       if (url_patterns_mutex == NULL) {
+               url_patterns_mutex = g_mutex_new ();
+       }
+       g_mutex_lock (url_patterns_mutex);
+       if (url_matches_block == 0)
+               compile_patterns ();
+       url_matches_block ++;
+       g_mutex_unlock (url_patterns_mutex);
+}
+
+void
+modest_text_utils_hyperlinkify_end (void)
+{
+       g_mutex_lock (url_patterns_mutex);
+       url_matches_block--;
+       if (url_matches_block <= 0)
+               free_patterns ();
+       g_mutex_unlock (url_patterns_mutex);
+}
+
 
 static GSList*
-get_url_matches (GString *txt)
+get_url_matches (GString *txt, gint offset)
 {
        regmatch_t rm;
-        guint rv, i, offset = 0;
+        guint rv, i, tmp_offset = 0;
         GSList *match_list = NULL;
 
-       static url_match_pattern_t patterns[] = MAIL_VIEWER_URL_MATCH_PATTERNS;
        const size_t pattern_num = sizeof(patterns)/sizeof(url_match_pattern_t);
 
        /* initalize the regexps */
-       for (i = 0; i != pattern_num; ++i) {
-               patterns[i].preg = g_slice_new0 (regex_t);
+       modest_text_utils_hyperlinkify_begin ();
 
-               /* this should not happen */
-               g_return_val_if_fail (regcomp (patterns[i].preg, patterns[i].regex,
-                                              REG_ICASE|REG_EXTENDED|REG_NEWLINE) == 0, NULL);
-       }
         /* find all the matches */
        for (i = 0; i != pattern_num; ++i) {
-               offset     = 0; 
+               tmp_offset     = offset;        
                while (1) {
                        url_match_t *match;
                        gboolean is_submatch;
                        GSList *cursor;
                        
-                       if ((rv = regexec (patterns[i].preg, txt->str + offset, 1, &rm, 0)) != 0) {
+                       if ((rv = regexec (patterns[i].preg, txt->str + tmp_offset, 1, &rm, 0)) != 0) {
                                g_return_val_if_fail (rv == REG_NOMATCH, NULL); /* this should not happen */
                                break; /* try next regexp */ 
                        }
@@ -863,7 +1251,7 @@ get_url_matches (GString *txt)
                        while (cursor && !is_submatch) {
                                const url_match_t *old_match =
                                        (const url_match_t *) cursor->data;
-                               guint new_offset = offset + rm.rm_so;
+                               guint new_offset = tmp_offset + rm.rm_so;
                                is_submatch = (new_offset >  old_match->offset &&
                                               new_offset <  old_match->offset + old_match->len);
                                cursor = g_slist_next (cursor);
@@ -872,21 +1260,16 @@ get_url_matches (GString *txt)
                        if (!is_submatch) {
                                /* make a list of our matches (<offset, len, prefix> tupels)*/
                                match = g_slice_new (url_match_t);
-                               match->offset = offset + rm.rm_so;
+                               match->offset = tmp_offset + rm.rm_so;
                                match->len    = rm.rm_eo - rm.rm_so;
                                match->prefix = patterns[i].prefix;
-                               g_warning ("<%d, %d, %s>",  match->offset, match->len, match->prefix);
                                match_list = g_slist_prepend (match_list, match);
-                       }
-                               
-                       offset += rm.rm_eo;
+                       }               
+                       tmp_offset += rm.rm_eo;
                }
        }
 
-       for (i = 0; i != pattern_num; ++i) {
-               regfree (patterns[i].preg);
-               g_slice_free  (regex_t, patterns[i].preg);
-       } /* don't free patterns itself -- it's static */
+       modest_text_utils_hyperlinkify_end ();
        
        /* now sort the list, so the matches are in reverse order of occurence.
         * that way, we can do the replacements starting from the end, so we don't need
@@ -899,11 +1282,34 @@ get_url_matches (GString *txt)
 
 
 
+/* replace all occurences of needle in haystack with repl*/
+static gchar*
+replace_string (const gchar *haystack, const gchar *needle, gchar repl)
+{
+       gchar *str, *cursor;
+
+       if (!haystack || !needle || strlen(needle) == 0)
+               return haystack ? g_strdup(haystack) : NULL;
+       
+       str = g_strdup (haystack);
+
+       for (cursor = str; cursor && *cursor; ++cursor) {
+               if (g_str_has_prefix (cursor, needle)) {
+                       cursor[0] = repl;
+                       memmove (cursor + 1,
+                                cursor + strlen (needle),
+                                strlen (cursor + strlen (needle)) + 1);
+               }
+       }
+       
+       return str;
+}
+
 static void
-hyperlinkify_plain_text (GString *txt)
+hyperlinkify_plain_text (GString *txt, gint offset)
 {
        GSList *cursor;
-       GSList *match_list = get_url_matches (txt);
+       GSList *match_list = get_url_matches (txt, offset);
 
        /* we will work backwards, so the offsets stay valid */
        for (cursor = match_list; cursor; cursor = cursor->next) {
@@ -912,10 +1318,17 @@ hyperlinkify_plain_text (GString *txt)
                gchar *url  = g_strndup (txt->str + match->offset, match->len);
                gchar *repl = NULL; /* replacement  */
 
+               /* the string still contains $(MARK_AMP_URI_STR)"amp;" for each
+                * '&' in the original, because of the text->html conversion.
+                * in the href-URL (and only there), we must convert that back to
+                * '&'
+                */
+               gchar *href_url = replace_string (url, MARK_AMP_URI_STR "amp;", '&');
+               
                /* the prefix is NULL: use the one that is already there */
                repl = g_strdup_printf ("<a href=\"%s%s\">%s</a>",
                                        match->prefix ? match->prefix : EMPTY_STRING, 
-                                       url, url);
+                                       href_url, url);
 
                /* replace the old thing with our hyperlink
                 * replacement thing */
@@ -924,6 +1337,7 @@ hyperlinkify_plain_text (GString *txt)
                
                g_free (url);
                g_free (repl);
+               g_free (href_url);
 
                g_slice_free (url_match_t, match);      
        }
@@ -931,43 +1345,93 @@ hyperlinkify_plain_text (GString *txt)
        g_slist_free (match_list);
 }
 
+void
+modest_text_utils_hyperlinkify (GString *string_buffer)
+{
+       gchar *after_body;
+       gint offset = 0;
 
+       after_body = strstr (string_buffer->str, "<body>");
+       if (after_body != NULL)
+               offset = after_body - string_buffer->str;
+       hyperlinkify_plain_text (string_buffer, offset);
+}
 
-gchar*
+
+/* for optimization reasons, we change the string in-place */
+void
 modest_text_utils_get_display_address (gchar *address)
 {
-       gchar *cursor;
+       int i;
+
+       g_return_if_fail (address);
        
        if (!address)
-               return NULL;
+               return;
        
-       g_return_val_if_fail (g_utf8_validate (address, -1, NULL), NULL);
+       /* should not be needed, and otherwise, we probably won't screw up the address
+        * more than it already is :) 
+        * g_return_val_if_fail (g_utf8_validate (address, -1, NULL), NULL);
+        * */
        
-       g_strchug (address); /* remove leading whitespace */
+       /* remove leading whitespace */
+       if (address[0] == ' ')
+               g_strchug (address);
+               
+       for (i = 0; address[i]; ++i) {
+               if (address[i] == '<') {
+                       if (G_UNLIKELY(i == 0)) {
+                               break; /* there's nothing else, leave it */
+                       }else {
+                               address[i] = '\0'; /* terminate the string here */
+                               break;
+                       }
+               }
+       }
 
-       /*  <email@address> from display name */
-       cursor = g_strstr_len (address, strlen(address), "<");
-       if (cursor == address) /* there's nothing else? leave it */
-               return address;
-       if (cursor) 
-               cursor[0]='\0';
+       g_strchomp (address);
+}
 
-       /* remove (bla bla) from display name */
-       cursor = g_strstr_len (address, strlen(address), "(");
-       if (cursor == address) /* there's nothing else? leave it */
-               return address;
-       if (cursor) 
-               cursor[0]='\0';
 
-       g_strchomp (address); /* remove trailing whitespace */
+gchar *
+modest_text_utils_get_display_addresses (const gchar *recipients)
+{
+       gchar *addresses;
+       GSList *recipient_list;
+
+       addresses = NULL;
+       recipient_list = modest_text_utils_split_addresses_list (recipients);
+       if (recipient_list) {
+               GString *add_string = g_string_sized_new (strlen (recipients));
+               GSList *iter = recipient_list;
+               gboolean first = TRUE;
+
+               while (iter) {
+                       /* Strings are changed in place */
+                       modest_text_utils_get_display_address ((gchar *) iter->data);
+                       if (G_UNLIKELY (first)) {
+                               g_string_append_printf (add_string, "%s", (gchar *) iter->data);
+                               first = FALSE;
+                       } else {
+                               g_string_append_printf (add_string, ", %s", (gchar *) iter->data);
+                       }
+                       iter = g_slist_next (iter);
+               }
+               g_slist_foreach (recipient_list, (GFunc) g_free, NULL);
+               g_slist_free (recipient_list);
+               addresses = g_string_free (add_string, FALSE);
+       }
 
-       return address;
+       return addresses;
 }
 
+
 gchar *
 modest_text_utils_get_email_address (const gchar *full_address)
 {
        const gchar *left, *right;
+
+       g_return_val_if_fail (full_address, NULL);
        
        if (!full_address)
                return NULL;
@@ -988,98 +1452,205 @@ modest_text_utils_get_email_address (const gchar *full_address)
 gint 
 modest_text_utils_get_subject_prefix_len (const gchar *sub)
 {
-       gint i;
-       static const gchar* prefix[] = {
-               "Re:", "RE:", "RV:", "re:"
-               "Fwd:", "FWD:", "FW:", "fwd:", "Fw:", "fw:", NULL
-       };
-               
-       if (!sub || (sub[0] != 'R' && sub[0] != 'F' && sub[0] != 'r' && sub[0] != 'f')) /* optimization */
-               return 0;
+       gint prefix_len = 0;    
 
-       i = 0;
+       g_return_val_if_fail (sub, 0);
+
+       if (!sub)
+               return 0;
        
-       while (prefix[i]) {
-               if (g_str_has_prefix(sub, prefix[i])) {
-                       int prefix_len = strlen(prefix[i]); 
-                       if (sub[prefix_len] == ' ')
-                               ++prefix_len; /* ignore space after prefix as well */
-                       return prefix_len; 
-               }
-               ++i;
+       /* optimization: "Re", "RE", "re","Fwd", "FWD", "fwd","FW","Fw", "fw" */
+       if (sub[0] != 'R' && sub[0] != 'F' && sub[0] != 'r' && sub[0] != 'f')
+               return 0;
+       else if (sub[0] && sub[1] != 'e' && sub[1] != 'E' && sub[1] != 'w' && sub[1] != 'W')
+               return 0;
+
+       prefix_len = 2;
+       if (sub[2] == 'd')
+               ++prefix_len;
+
+       /* skip over a [...] block */
+       if (sub[prefix_len] == '[') {
+               int c = prefix_len + 1;
+               while (sub[c] && sub[c] != ']')
+                       ++c;
+               if (!sub[c])
+                       return 0; /* no end to the ']' found */
+               else
+                       prefix_len = c + 1;
        }
-       return 0;
+
+       /* did we find the ':' ? */
+       if (sub[prefix_len] == ':') {
+               ++prefix_len;
+               if (sub[prefix_len] == ' ')
+                       ++prefix_len;
+               prefix_len += modest_text_utils_get_subject_prefix_len (sub + prefix_len);
+/*             g_warning ("['%s','%s']", sub, (char*) sub + prefix_len); */
+               return prefix_len;
+       } else
+               return 0;
 }
 
 
 gint
 modest_text_utils_utf8_strcmp (const gchar* s1, const gchar *s2, gboolean insensitive)
 {
-       gint result = 0;
-       gchar *n1, *n2;
 
-       /* work even when s1 and/or s2 == NULL */
+/* work even when s1 and/or s2 == NULL */
        if (G_UNLIKELY(s1 == s2))
                return 0;
-
-       /* if it's not case sensitive */
-       if (!insensitive)
-               return strcmp (s1 ? s1 : "", s2 ? s2 : "");
+       if (G_UNLIKELY(!s1))
+               return -1;
+       if (G_UNLIKELY(!s2))
+               return 1;
        
-       n1 = g_utf8_collate_key (s1 ? s1 : "", -1);
-       n2 = g_utf8_collate_key (s2 ? s2 : "", -1);
-       
-       result = strcmp (n1, n2);
+       /* if it's not case sensitive */
+       if (!insensitive) {
+
+               /* optimization: shortcut if first char is ascii */ 
+               if (((s1[0] & 0x80)== 0) && ((s2[0] & 0x80) == 0) &&
+                   (s1[0] != s2[0])) 
+                       return s1[0] - s2[0];
+               
+               return g_utf8_collate (s1, s2);
 
-       g_free (n1);
-       g_free (n2);
+       } else {
+               gint result;
+               gchar *n1, *n2;
+
+               /* optimization: shortcut if first char is ascii */ 
+               if (((s1[0] & 0x80) == 0) && ((s2[0] & 0x80) == 0) &&
+                   (tolower(s1[0]) != tolower (s2[0]))) 
+                       return tolower(s1[0]) - tolower(s2[0]);
+               
+               n1 = g_utf8_strdown (s1, -1);
+               n2 = g_utf8_strdown (s2, -1);
+               
+               result = g_utf8_collate (n1, n2);
+               
+               g_free (n1);
+               g_free (n2);
        
-       return result;
+               return result;
+       }
 }
 
 
-gchar*
+const gchar*
 modest_text_utils_get_display_date (time_t date)
 {
-       time_t now;
-       static const guint BUF_SIZE = 64; 
-       static const guint ONE_DAY = 24 * 60 * 60; /* seconds in one day */
-       gchar date_buf[BUF_SIZE];  
-       gchar today_buf [BUF_SIZE];  
+#define DATE_BUF_SIZE 64 
+       static gchar date_buf[DATE_BUF_SIZE];
+       
+       /* calculate the # of days since epoch for 
+        * for today and for the date provided 
+        * based on idea from pvanhoof */
+       int day      = time(NULL) / (24 * 60 * 60);
+       int date_day = date       / (24 * 60 * 60);
+
+       /* if it's today, show the time, if it's not today, show the date instead */
+
+       /* TODO: take into account the system config for 24/12h */
+#ifdef MODEST_TOOLKIT_HILDON2
+       if (day == date_day) /* is the date today? */
+               modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, _HL("wdgt_va_24h_time"), date);
+       else 
+               modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, _HL("wdgt_va_date"), date); 
+#else
+       if (day == date_day) /* is the date today? */
+               modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, "%X", date);
+       else 
+               modest_text_utils_strftime (date_buf, DATE_BUF_SIZE, "%x", date); 
+#endif
+
+       return date_buf; /* this is a static buffer, don't free! */
+}
 
-       modest_text_utils_strftime (date_buf, BUF_SIZE, "%x", date); 
 
-       now = time (NULL);
 
-       /* we check if the date is within the last 24h, if not, we don't
-        * have to do the extra, expensive strftime, which was very visible
-        * in the profiles.
-        */
-       if (abs(now - date) < ONE_DAY) {
-               
-               /* it's within the last 24 hours, but double check */
-               /* use the localized dates */
-               modest_text_utils_strftime (today_buf,  BUF_SIZE, "%x", now); 
+gboolean
+modest_text_utils_validate_folder_name (const gchar *folder_name)
+{
+       /* based on http://msdn2.microsoft.com/en-us/library/aa365247.aspx,
+        * with some extras */
+       
+       guint len;
+       gint i;
+       const gchar **cursor = NULL;
+       const gchar *forbidden_names[] = { /* windows does not like these */
+               "CON", "PRN", "AUX", "NUL", ".", "..", "cur", "tmp", "new", 
+               NULL /* cur, tmp, new are reserved for Maildir */
+       };
+       
+       /* cannot be NULL */
+       if (!folder_name) 
+               return FALSE;
+
+       /* cannot be empty */
+       len = strlen(folder_name);
+       if (len == 0)
+               return FALSE;
+       
+       /* cannot start with a dot, vfat does not seem to like that */
+       if (folder_name[0] == '.')
+               return FALSE;
+
+       /* cannot start or end with a space */
+       if (g_ascii_isspace(folder_name[0]) || g_ascii_isspace(folder_name[len - 1]))
+               return FALSE; 
 
-               /* if it's today, use the time instead */
-               if (strcmp (date_buf, today_buf) == 0)
-                       modest_text_utils_strftime (date_buf, BUF_SIZE, "%X", date);
+       /* cannot contain a forbidden char */   
+       for (i = 0; i < len; i++)
+               if (modest_text_utils_is_forbidden_char (folder_name[i], FOLDER_NAME_FORBIDDEN_CHARS))
+                       return FALSE;
+
+       /* Cannot contain Windows port numbers. I'd like to use GRegex
+          but it's still not available in Maemo. sergio */
+       if (!g_ascii_strncasecmp (folder_name, "LPT", 3) ||
+           !g_ascii_strncasecmp (folder_name, "COM", 3)) {
+               glong val;
+               gchar *endptr;
+
+               /* We skip the first 3 characters for the
+                  comparison */
+               val = strtol(folder_name+3, &endptr, 10);
+
+               /* If the conversion to long succeeded then the string
+                  is not valid for us */
+               if (*endptr == '\0')
+                       return FALSE;
+               else
+                       return TRUE;
        }
        
-       return g_strdup(date_buf);
+       /* cannot contain a forbidden word */
+       if (len <= 4) {
+               for (cursor = forbidden_names; cursor && *cursor; ++cursor) {
+                       if (g_ascii_strcasecmp (folder_name, *cursor) == 0)
+                               return FALSE;
+               }
+       }
+
+       return TRUE; /* it's valid! */
 }
 
 
+
 gboolean
 modest_text_utils_validate_domain_name (const gchar *domain)
 {
        gboolean valid = FALSE;
        regex_t rx;
-       const gchar* domain_regex = "^[a-z0-9]([.]?[a-z0-9-])*[a-z0-9]$";
+       const gchar* domain_regex = "^([a-z0-9-]*[a-z0-9]\\.)+[a-z0-9-]*[a-z0-9]$";
 
+       g_return_val_if_fail (domain, FALSE);
+       
        if (!domain)
                return FALSE;
        
+       memset (&rx, 0, sizeof(regex_t)); /* coverity wants this... */
+               
        /* domain name: all alphanum or '-' or '.',
         * but beginning/ending in alphanum */  
        if (regcomp (&rx, domain_regex, REG_ICASE|REG_EXTENDED|REG_NOSUB)) {
@@ -1096,15 +1667,23 @@ modest_text_utils_validate_domain_name (const gchar *domain)
 
 
 gboolean
-modest_text_utils_validate_email_address (const gchar *email_address, const gchar **invalid_char_position)
+modest_text_utils_validate_email_address (const gchar *email_address,
+                                         const gchar **invalid_char_position)
 {
        int count = 0;
        const gchar *c = NULL, *domain = NULL;
        static gchar *rfc822_specials = "()<>@,;:\\\"[]&";
-
-       if (invalid_char_position != NULL)
+       
+       if (invalid_char_position)
                *invalid_char_position = NULL;
-
+       
+       g_return_val_if_fail (email_address, FALSE);
+       
+       /* check that the email adress contains exactly one @ */
+       if (!strstr(email_address, "@") || 
+                       (strstr(email_address, "@") != g_strrstr(email_address, "@"))) 
+               return FALSE;
+       
        /* first we validate the name portion (name@domain) */
        for (c = email_address;  *c;  c++) {
                if (*c == '\"' && 
@@ -1145,7 +1724,7 @@ modest_text_utils_validate_email_address (const gchar *email_address, const gcha
                return FALSE;
        do {
                if (*c == '.') {
-                       if (c == domain || *(c - 1) == '.') 
+                       if (c == domain || *(c - 1) == '.' || *(c + 1) == '\0') 
                                return FALSE;
                        count++;
                }
@@ -1168,8 +1747,14 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
        gchar *right_part;
        gboolean has_error = FALSE;
 
+       if (invalid_char_position)
+               *invalid_char_position = NULL;
+       
+       g_return_val_if_fail (recipient, FALSE);
+       
        if (modest_text_utils_validate_email_address (recipient, invalid_char_position))
                return TRUE;
+
        stripped = g_strdup (recipient);
        stripped = g_strstrip (stripped);
        current = stripped;
@@ -1181,6 +1766,7 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
 
        /* quoted string */
        if (*current == '\"') {
+               gchar *last_quote = NULL;
                current = g_utf8_next_char (current);
                has_error = TRUE;
                for (; *current != '\0'; current = g_utf8_next_char (current)) {
@@ -1196,9 +1782,11 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
                        } else if (*current == '\"') {
                                has_error = FALSE;
                                current = g_utf8_next_char (current);
-                               break;
+                               last_quote = current;
                        }
                }
+               if (last_quote)
+                       current = g_utf8_next_char (last_quote);
        } else {
                has_error = TRUE;
                for (current = stripped ; *current != '\0'; current = g_utf8_next_char (current)) {
@@ -1218,6 +1806,9 @@ modest_text_utils_validate_recipient (const gchar *recipient, const gchar **inva
        g_free (stripped);
        right_part = g_strstrip (right_part);
 
+       if (g_str_has_suffix (right_part, ",") || g_str_has_suffix (right_part, ";"))
+               right_part [(strlen (right_part) - 1)] = '\0';
+
        if (g_str_has_prefix (right_part, "<") &&
            g_str_has_suffix (right_part, ">")) {
                gchar *address;
@@ -1243,19 +1834,19 @@ modest_text_utils_get_display_size (guint64 size)
        const guint GB=1024 * MB;
 
        if (size == 0)
-               return g_strdup_printf(_FM("sfil_li_size_kb"), 0);
-       if (0 < size && size < KB)
-               return g_strdup_printf (_FM("sfil_li_size_kb"), 1);
+               return g_strdup_printf (_FM("sfil_li_size_kb"), (int) 0);
+       if (0 <= size && size < KB)
+               return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), (int) 1);
        else if (KB <= size && size < 100 * KB)
-               return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), size / KB);
+               return g_strdup_printf (_FM("sfil_li_size_1kb_99kb"), (int) size / KB);
        else if (100*KB <= size && size < MB)
-               return g_strdup_printf (_FM("sfil_li_size_100kb_1mb"), (float) size / MB);
+               return g_strdup_printf (_FM("sfil_li_size_100kb_1mb"), (int) size / KB);
        else if (MB <= size && size < 10*MB)
                return g_strdup_printf (_FM("sfil_li_size_1mb_10mb"), (float) size / MB);
        else if (10*MB <= size && size < GB)
-               return g_strdup_printf (_FM("sfil_li_size_10mb_1gb"), size / MB);
+               return g_strdup_printf (_FM("sfil_li_size_10mb_1gb"), (float) size / MB);
        else
-               return g_strdup_printf (_FM("sfil_li_size_1gb_or_greater"), (float) size / GB); 
+               return g_strdup_printf (_FM("sfil_li_size_1gb_or_greater"), (float) size / GB);
 }
 
 static gchar *
@@ -1272,9 +1863,10 @@ get_email_from_address (const gchar * address)
                return g_strndup (left_limit + 1, (right_limit - left_limit) - 1);
 }
 
-gchar *      
+gchar *
 modest_text_utils_get_color_string (GdkColor *color)
 {
+       g_return_val_if_fail (color, NULL);
 
        return g_strdup_printf ("#%x%x%x%x%x%x%x%x%x%x%x%x",
                                (color->red >> 12)   & 0xf, (color->red >> 8)   & 0xf,
@@ -1292,8 +1884,8 @@ modest_text_utils_text_buffer_get_text (GtkTextBuffer *buffer)
        gchar *slice, *current;
        GString *result = g_string_new ("");
 
-       g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), NULL);
-
+       g_return_val_if_fail (buffer && GTK_IS_TEXT_BUFFER (buffer), NULL);
+       
        gtk_text_buffer_get_start_iter (buffer, &start);
        gtk_text_buffer_get_end_iter (buffer, &end);
 
@@ -1319,3 +1911,335 @@ modest_text_utils_text_buffer_get_text (GtkTextBuffer *buffer)
        return g_string_free (result, FALSE);
        
 }
+
+gboolean
+modest_text_utils_is_forbidden_char (const gchar character,
+                                    ModestTextUtilsForbiddenCharType type)
+{
+       gint i, len;
+       const gchar *forbidden_chars = NULL;
+       
+       /* We need to get the length in the switch because the
+          compiler needs to know the size at compile time */
+       switch (type) {
+       case ACCOUNT_TITLE_FORBIDDEN_CHARS:
+               forbidden_chars = account_title_forbidden_chars;
+               len = G_N_ELEMENTS (account_title_forbidden_chars);
+               break;
+       case FOLDER_NAME_FORBIDDEN_CHARS:
+               forbidden_chars = folder_name_forbidden_chars;
+               len = G_N_ELEMENTS (folder_name_forbidden_chars);
+               break;
+       case USER_NAME_FORBIDDEN_NAMES:
+               forbidden_chars = user_name_forbidden_chars;
+               len = G_N_ELEMENTS (user_name_forbidden_chars);
+               break;
+       default:
+               g_return_val_if_reached (TRUE);
+       }
+
+       for (i = 0; i < len ; i++)
+               if (forbidden_chars[i] == character)
+                       return TRUE;
+
+       return FALSE; /* it's valid! */
+}
+
+gchar *      
+modest_text_utils_label_get_selection (GtkLabel *label)
+{
+       gint start, end;
+       gchar *selection;
+
+       if (gtk_label_get_selection_bounds (GTK_LABEL (label), &start, &end)) {
+               const gchar *start_offset;
+               const gchar *end_offset;
+               start_offset = gtk_label_get_text (GTK_LABEL (label));
+               start_offset = g_utf8_offset_to_pointer (start_offset, start);
+               end_offset = gtk_label_get_text (GTK_LABEL (label));
+               end_offset = g_utf8_offset_to_pointer (end_offset, end);
+               selection = g_strndup (start_offset, end_offset - start_offset);
+               return selection;
+       } else {
+               return g_strdup ("");
+       }
+}
+
+static gboolean
+_forward_search_image_char (gunichar ch,
+                           gpointer userdata)
+{
+       return (ch == 0xFFFC);
+}
+
+gboolean
+modest_text_utils_buffer_selection_is_valid (GtkTextBuffer *buffer)
+{
+       gboolean result;
+       GtkTextIter start, end;
+
+       g_return_val_if_fail (GTK_IS_TEXT_BUFFER (buffer), FALSE);
+
+       result = gtk_text_buffer_get_has_selection (GTK_TEXT_BUFFER (buffer));
+
+       /* check there are no images in selection */
+       if (result) {
+               gtk_text_buffer_get_selection_bounds (buffer, &start, &end);
+               if (gtk_text_iter_get_char (&start)== 0xFFFC)
+                       result = FALSE;
+               else {
+                       gtk_text_iter_backward_char (&end);
+                       if (gtk_text_iter_forward_find_char (&start, _forward_search_image_char,
+                                                            NULL, &end))
+                               result = FALSE;
+               }
+                                   
+       }
+
+       return result;
+}
+
+static void
+remove_quotes (gchar **quotes)
+{
+       if (g_str_has_prefix (*quotes, "\"") && g_str_has_suffix (*quotes, "\"")) {
+               gchar *result;
+               result = g_strndup ((*quotes)+1, strlen (*quotes) - 2);
+               g_free (*quotes);
+               *quotes = result;
+       }
+}
+
+static void
+remove_extra_spaces (gchar *string)
+{
+       gchar *start;
+
+       start = string;
+       while (start && start[0] != '\0') {
+               if ((start[0] == ' ') && (start[1] == ' ')) {
+                       g_strchug (start+1);
+               }
+               start++;
+       }
+}
+
+gchar *
+modest_text_utils_escape_mnemonics (const gchar *text)
+{
+       const gchar *p;
+       GString *result = NULL;
+
+       if (text == NULL)
+               return NULL;
+
+       result = g_string_new ("");
+       for (p = text; *p != '\0'; p++) {
+               if (*p == '_')
+                       result = g_string_append (result, "__");
+               else
+                       result = g_string_append_c (result, *p);
+       }
+       
+       return g_string_free (result, FALSE);
+}
+
+gchar *
+modest_text_utils_simplify_recipients (const gchar *recipients)
+{
+       GSList *addresses, *node;
+       GString *result;
+       gboolean is_first = TRUE;
+
+       if (recipients == NULL)
+               return g_strdup ("");
+
+       addresses = modest_text_utils_split_addresses_list (recipients);
+       result = g_string_new ("");
+
+       for (node = addresses; node != NULL; node = g_slist_next (node)) {
+               const gchar *address = (const gchar *) node->data;
+               gchar *left_limit, *right_limit;
+
+               left_limit = strstr (address, "<");
+               right_limit = g_strrstr (address, ">");
+
+               if (is_first)
+                       is_first = FALSE;
+               else
+                       result = g_string_append (result, ", ");
+
+               if ((left_limit == NULL)||(right_limit == NULL)|| (left_limit > right_limit)) {
+                       result = g_string_append (result, address);
+               } else {
+                       gchar *name_side;
+                       gchar *email_side;
+                       name_side = g_strndup (address, left_limit - address);
+                       name_side = g_strstrip (name_side);
+                       remove_quotes (&name_side);
+                       email_side = get_email_from_address (address);
+                       if (name_side && email_side && !strcmp (name_side, email_side)) {
+                               result = g_string_append (result, email_side);
+                       } else {
+                               result = g_string_append (result, address);
+                       }
+                       g_free (name_side);
+                       g_free (email_side);
+               }
+
+       }
+       g_slist_foreach (addresses, (GFunc)g_free, NULL);
+       g_slist_free (addresses);
+
+       return g_string_free (result, FALSE);
+
+}
+
+GSList *
+modest_text_utils_remove_duplicate_addresses_list (GSList *address_list)
+{
+       GSList *new_list, *iter;
+       GHashTable *table;
+
+       g_return_val_if_fail (address_list, NULL);
+
+       table = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
+
+       new_list = address_list;
+       iter = address_list;
+       while (iter) {
+               const gchar* address = (const gchar*)iter->data;
+
+               /* We need only the email to just compare it and not
+                  the full address which would make "a <a@a.com>"
+                  different from "a@a.com" */
+               const gchar *email = get_email_from_address (address);
+
+               /* ignore the address if already seen */
+               if (g_hash_table_lookup (table, email) == 0) {
+                       g_hash_table_insert (table, (gchar*)email, GINT_TO_POINTER(1));
+                       iter = g_slist_next (iter);
+               } else {
+                       GSList *tmp = g_slist_next (iter);
+                       new_list = g_slist_delete_link (new_list, iter);
+                       iter = tmp;
+               }
+       }
+
+       g_hash_table_unref (table);
+
+       return new_list;
+}
+
+gchar *
+modest_text_utils_get_secure_header (const gchar *value,
+                                    const gchar *header)
+{
+       const gint max_len = 16384;
+       gchar *new_value = NULL;
+       gchar *needle = g_strrstr (value, header);
+
+       if (needle && value != needle)
+               new_value = g_strdup (needle + strlen (header));
+
+       if (!new_value)
+               new_value = g_strdup (value);
+
+       /* Do a max length check to prevent DoS attacks caused by huge
+          malformed headers */
+       if (g_utf8_validate (new_value, -1, NULL)) {
+               if (g_utf8_strlen (new_value, -1) > max_len) {
+                       gchar *tmp = g_malloc0 (max_len * 4);
+                       g_utf8_strncpy (tmp, (const gchar *) new_value, max_len);
+                       g_free (new_value);
+                       new_value = tmp;
+               }
+       } else {
+               if (strlen (new_value) > max_len) {
+                       gchar *tmp = g_malloc0 (max_len);
+                       strncpy (new_value, tmp, max_len);
+                       g_free (new_value);
+                       new_value = tmp;
+               }
+       }
+
+       return new_value;
+}
+
+static gboolean
+is_quoted (const char *start, const gchar *end)
+{
+       gchar *c;
+
+       c = (gchar *) start;
+       while (*c == ' ')
+               c = g_utf8_next_char (c);
+
+       if (*c == '\0' || *c != '\"')
+               return FALSE;
+
+       c = (gchar *) end;
+       while (*c == ' ' && c != start)
+               c = g_utf8_prev_char (c);
+
+       if (c == start || *c != '\"')
+               return FALSE;
+
+       return TRUE;
+}
+
+
+static void
+quote_name_part (GString **str, gchar **cur, gchar **start)
+{
+       gchar *blank;
+       gint str_len = *cur - *start;
+
+       while (**start == ' ') {
+               *start = g_utf8_next_char (*start);
+               str_len--;
+       }
+
+       blank = g_utf8_strrchr (*start, str_len, g_utf8_get_char (" "));
+       if (blank && (blank != *start)) {
+               if (is_quoted (*start, blank - 1)) {
+                       *str = g_string_append_len (*str, *start, str_len);
+                       *str = g_string_append (*str, ";");
+                       *start = g_utf8_next_char (*cur);
+               } else {
+                       *str = g_string_append_c (*str, '"');
+                       *str = g_string_append_len (*str, *start, (blank - *start));
+                       *str = g_string_append_c (*str, '"');
+                       *str = g_string_append_len (*str, blank, (*cur - blank));
+                       *str = g_string_append (*str, ";");
+                       *start = g_utf8_next_char (*cur);
+               }
+       } else {
+               *str = g_string_append_len (*str, *start, str_len);
+               *str = g_string_append (*str, ";");
+               *start = g_utf8_next_char (*cur);
+       }
+}
+
+gchar *
+modest_text_utils_quote_names (const gchar *recipients)
+{
+       GString *str;
+       gchar *start, *cur;
+
+       str = g_string_new ("");
+       start = (gchar*) recipients;
+       cur = (gchar*) recipients;
+
+       for (cur = start; *cur != '\0'; cur = g_utf8_next_char (cur)) {
+               if (*cur == ',' || *cur == ';') {
+                       if (!g_utf8_strchr (start, (cur - start + 1), g_utf8_get_char ("@")))
+                               continue;
+                       quote_name_part (&str, &cur, &start);
+               }
+       }
+
+       quote_name_part (&str, &cur, &start);
+
+       return g_string_free (str, FALSE);
+}