[gnome-shell/wip/carlosg/im-untimely-preedit-41: 1/3] inputMethod: Equate empty preedit string to null

[Carlos Garnacho <carlosg src gnome org>]

commit b1538fcb2079b836ac5f8170a0949f77bb5f35e4
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Oct 29 16:41:55 2021 +0200

    inputMethod: Equate empty preedit string to null
    
    If we get '' from the IM as the preedit string, it is pretty safe
    to handle it as "no preedit" altogether.
    
    (Cherry-picked from commit 286cfdc6d48dc4315df54d29d7d16b5198d92a56)

 js/misc/inputMethod.js | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/js/misc/inputMethod.js b/js/misc/inputMethod.js
index 1f9eaee7a8..7de7540d3f 100644
--- a/js/misc/inputMethod.js
+++ b/js/misc/inputMethod.js
@@ -111,6 +111,8 @@ class InputMethod extends Clutter.InputMethod {
             return;
 
         let preedit = text.get_text();
+        if (preedit === '')
+            preedit = null;
 
         if (visible)
             this.set_preedit_text(preedit, pos, mode);