[evolution] Don't wrap on Unicode's non-breaking space character

[Tomas Popela <tpopela src gnome org>]

commit 676e3e14f9f047ec773dfeba18481b0024026abb
Author: Tomas Popela <tpopela redhat com>
Date:   Tue Sep 8 15:56:51 2015 +0200

    Don't wrap on Unicode's non-breaking space character
    
    Revert commit db11d8fbe583d939dae84efb11e109ba65a8d870 and instead teach the
    code to not to wrap on non-breaking space. Also after previously mentioned
    commit it was not possible to insert spaces on the beginning of a line when writing
    into multi line content (they were auto collapsed).

 e-util/e-html-editor-selection.c |   12 +++++++-----
 e-util/e-html-editor-view.c      |   11 -----------
 2 files changed, 7 insertions(+), 16 deletions(-)
---
diff --git a/e-util/e-html-editor-selection.c b/e-util/e-html-editor-selection.c
index 09d1a28..21da6b0 100644
--- a/e-util/e-html-editor-selection.c
+++ b/e-util/e-html-editor-selection.c
@@ -6127,7 +6127,8 @@ find_where_to_break_line (WebKitDOMCharacterData *node,
                        goto out;
                }
 
-               if (g_unichar_isspace (uc) || *str == '-') {
+               if ((g_unichar_isspace (uc) && !(g_unichar_break_type (uc) == 
G_UNICODE_BREAK_NON_BREAKING_GLUE)) ||
+                    *str == '-') {
                        if ((last_break_position_is_dash = *str == '-')) {
                                /* There was no space before the dash */
                                if (pos - 1 != last_break_position) {
@@ -6159,7 +6160,8 @@ find_where_to_break_line (WebKitDOMCharacterData *node,
                                str = g_utf8_next_char (str);
                                uc = g_utf8_get_char (str);
 
-                               if (g_unichar_isspace (uc))
+                               if ((g_unichar_isspace (uc) &&
+                                   !(g_unichar_break_type (uc) == G_UNICODE_BREAK_NON_BREAKING_GLUE)))
                                        last_break_position = ++pos;
                        }
                        break;
@@ -6591,12 +6593,12 @@ wrap_lines (EHTMLEditorSelection *selection,
 
                                                        /* Find the last character where we can break. */
                                                        while (text_length - length > 0) {
-                                                               if (strchr (" "UNICODE_NBSP, data[text_length 
- length - 1])) {
+                                                               if (strchr (" ", data[text_length - length - 
1])) {
                                                                        length++;
                                                                        break;
                                                                } else if (data[text_length - length - 1] == 
'-' &&
                                                                           text_length - length > 1 &&
-                                                                          !strchr (" "UNICODE_NBSP, 
data[text_length - length - 2]))
+                                                                          !strchr (" ", data[text_length - 
length - 2]))
                                                                        break;
                                                                length++;
                                                        }
@@ -6655,7 +6657,7 @@ wrap_lines (EHTMLEditorSelection *selection,
                                                        mark_and_remove_leading_space (document, nd);
                                                g_free (nd_content);
                                                nd_content = webkit_dom_node_get_text_content (nd);
-                                               if (g_strcmp0 (nd_content, UNICODE_NBSP) == 0 || !*nd_content)
+                                               if (!*nd_content)
                                                        remove_node (nd);
                                                g_free (nd_content);
                                        }
diff --git a/e-util/e-html-editor-view.c b/e-util/e-html-editor-view.c
index db30d06..b0cf7c1 100644
--- a/e-util/e-html-editor-view.c
+++ b/e-util/e-html-editor-view.c
@@ -8554,16 +8554,6 @@ process_elements (EHTMLEditorView *view,
                                gchar *class;
                                const gchar *css_align;
 
-                               if (strstr (content, UNICODE_NBSP)) {
-                                       GString *nbsp_free;
-
-                                       nbsp_free = e_str_replace_string (
-                                               content, UNICODE_NBSP, " ");
-
-                                       g_free (content);
-                                       content = g_string_free (nbsp_free, FALSE);
-                               }
-
                                class = webkit_dom_element_get_class_name (WEBKIT_DOM_ELEMENT (node));
                                if ((css_align = strstr (class, "-x-evo-align-"))) {
                                        gchar *align;
@@ -11182,7 +11172,6 @@ e_html_editor_view_update_fonts (EHTMLEditorView *view)
                "  font-size: %dpt;\n"
                "  font-weight: %d;\n"
                "  font-style: %s;\n"
-               "  -webkit-nbsp-mode: space;"
                "  -webkit-line-break: after-white-space;\n",
                pango_font_description_get_family (vw),
                pango_font_description_get_size (vw) / PANGO_SCALE,