[evolution] Composer: Special-case requote of BLOCKQUOTE nodes in Plain Text mode

[Milan Crha <mcrha src gnome org>]

commit 0fc6bf5804240397945cb7395350ec34069dc98e
Author: Milan Crha <mcrha redhat com>
Date:   Thu Jan 13 15:40:56 2022 +0100

    Composer: Special-case requote of BLOCKQUOTE nodes in Plain Text mode
    
    While the BLOCKQUOTE node is considered a clock node, it's not a real
    block node for paragraph quoting, thus special-case it and requote
    its content instead.
    
    This could exhibit in certain occasions when deleting content inside
    quoted part using Backspace or Delete keys.

 data/webkit/e-editor.js | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)
---
diff --git a/data/webkit/e-editor.js b/data/webkit/e-editor.js
index 2746590d2e..4f0452cdaa 100644
--- a/data/webkit/e-editor.js
+++ b/data/webkit/e-editor.js
@@ -3093,6 +3093,23 @@ EvoEditor.hasElementWithTagNameAsParent = function(node, tagName)
        return false;
 }
 
+EvoEditor.requoteBlockquotes = function(node, blockquoteLevel)
+{
+       var child;
+
+       for (child = node.firstChild; child; child = child.nextElementSibling) {
+               if (child.tagName == "DIV" ||
+                   child.tagName == "P" ||
+                   child.tagName == "PRE" ||
+                   child.tagName == "UL" ||
+                   child.tagName == "OL") {
+                       EvoEditor.quoteParagraph(child, blockquoteLevel, EvoEditor.NORMAL_PARAGRAPH_WIDTH - 
(2 * blockquoteLevel));
+               } else if (child.tagName == "BLOCKQUOTE") {
+                       EvoEditor.requoteBlockquotes(child, blockquoteLevel + 1);
+               }
+       }
+}
+
 EvoEditor.requoteNodeParagraph = function(node)
 {
        while (node && node.tagName != "BODY" && !EvoEditor.IsBlockNode(node)) {
@@ -3108,7 +3125,11 @@ EvoEditor.requoteNodeParagraph = function(node)
        try {
                var blockquoteLevel = EvoEditor.getBlockquoteLevel(node);
 
-               EvoEditor.quoteParagraph(node, blockquoteLevel, EvoEditor.NORMAL_PARAGRAPH_WIDTH - (2 * 
blockquoteLevel));
+               if (node.tagName == "BLOCKQUOTE") {
+                       EvoEditor.requoteBlockquotes(node, blockquoteLevel);
+               } else {
+                       EvoEditor.quoteParagraph(node, blockquoteLevel, EvoEditor.NORMAL_PARAGRAPH_WIDTH - (2 
* blockquoteLevel));
+               }
        } finally {
                EvoUndoRedo.StopRecord(EvoUndoRedo.RECORD_KIND_CUSTOM, "requote");
        }