[FIX] web_editor: fix crash when hitting SHIFT+TAB on an empty editor

repro : open any editor (like tasks), empty its content and hit SHIFT+TAB
before this fix: you get a traceback
after this fix: you don't get a traceback

1 files changed, 6 insertions, 4 deletions

diff --git a/addons/web_editor/static/src/js/editor/summernote.js b/addons/web_editor/static/src/js/editor/summernote.js
index 6939c90cefa..3e11cdc6886 100644
--- a/addons/web_editor/static/src/js/editor/summernote.js
+++ b/addons/web_editor/static/src/js/editor/summernote.js
@@ -1060,10 +1060,12 @@ $.summernote.pluginEvents.tab = function (event, editor, layoutInfo, outdent) {
             } else {
                 r = dom.merge(r.sc.parentNode, r.sc, r.so, r.ec, r.eo, null, true);
                 r = range.create(r.sc, r.so, r.ec, r.eo);
-                next = r.sc.splitText(r.so);
-                r.sc.textContent = r.sc.textContent.replace(/(\u00A0)+$/g, '');
-                next.textContent = next.textContent.replace(/^(\u00A0)+/g, '');
-                range.create(r.sc, r.sc.textContent.length, r.sc, r.sc.textContent.length).select();
+                if (r.sc.splitText) {
+                    next = r.sc.splitText(r.so);
+                    r.sc.textContent = r.sc.textContent.replace(/(\u00A0)+$/g, '');
+                    next.textContent = next.textContent.replace(/^(\u00A0)+/g, '');
+                    range.create(r.sc, r.sc.textContent.length, r.sc, r.sc.textContent.length).select();
+                }
             }
         }
     }