evas_object_textblock: treat variation sequence as single run

Summary:
Variation sequence treated as a single run, if we found one, we keep looking adding to the same  run, but if it is not, then we need to start a new one.

Before:
{F3826735}

After:
{F3826736}

Test Plan:
```
#include <stdio.h>
#include <Elementary.h>
/*
gcc -o example test.c `pkg-config --cflags --libs elementary`
*/

EAPI_MAIN int
elm_main(int argc EINA_UNUSED, char **argv EINA_UNUSED)
{
   Evas_Object *win, *en;

   elm_policy_set(ELM_POLICY_QUIT, ELM_POLICY_QUIT_LAST_WINDOW_CLOSED);

   win = elm_win_util_standard_add("emoji-example", "emoji-example");
   elm_win_autodel_set(win, EINA_TRUE);

   en = elm_entry_add(win);
   elm_entry_scrollable_set(en, EINA_TRUE);
   evas_object_size_hint_weight_set(en, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
   evas_object_size_hint_align_set(en, EVAS_HINT_FILL, EVAS_HINT_FILL);

   elm_object_text_set(en, "<font_size=25>&#x262a;&#x262a;&#xfe0f;&#x262a;가</font_size>");

   evas_object_show(en);

   elm_object_content_set(win, en);
   evas_object_resize(win, 400, 200);
   evas_object_show(win);

   elm_run();

   return 0;
}
ELM_MAIN()
```

Reviewers: woohyun, bowonryu

Subscribers: cedric, #reviewers, #committers

Tags: #efl

Maniphest Tasks: T8542

Differential Revision: https://phab.enlightenment.org/D11096

1 files changed, 12 insertions, 1 deletions

diff --git a/src/lib/evas/common/evas_font_query.c b/src/lib/evas/common/evas_font_query.c
index bab7376621..640fc65b4c 100644
--- a/src/lib/evas/common/evas_font_query.c
+++ b/src/lib/evas/common/evas_font_query.c
@@ -68,6 +68,7 @@ get_top_font:
 
    /* Find the longest run of the same font starting from the start position
     * and update cur_fi accordingly. */
+   Eina_Unicode variation_sequence = 0;
    itr = text;
    while (itr < run_end)
      {
@@ -85,7 +86,17 @@ get_top_font:
              if (evas_common_language_char_script_get(*itr) == EVAS_SCRIPT_INHERITED)
                 continue;
 
-             Eina_Unicode variation_sequence =  VAR_SEQ_SAFE(itr+1);
+             if (!variation_sequence)
+               {
+                  variation_sequence =  VAR_SEQ_SAFE(itr+1);
+               }
+             else
+               {
+                  /* Variation sequence treated as single run, if we found one, we keep looking adding to same
+                   * run, but if it is not, then we need to start a new one */
+                  if (variation_sequence != VAR_SEQ_SAFE(itr+1))
+                    break;
+               }
 
              /* Break if either it's not in the font, or if it is in the
               * script's font. */