[LyX/master] revert_mintedlangs: consider grouping when splitting options

[Juergen Spitzmueller]

commit 441fe44742204083011b449a058df79ea6d5cde8
Author: Juergen Spitzmueller <spitz at lyx.org>
Date:   Tue Aug 4 06:50:22 2026 +0200

    revert_mintedlangs: consider grouping when splitting options
    
    Thanks to Pavel and Claude
---
 lib/lyx2lyx/lyx_2_6.py | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/lib/lyx2lyx/lyx_2_6.py b/lib/lyx2lyx/lyx_2_6.py
index f88d3f011b..9c2eb4c634 100644
--- a/lib/lyx2lyx/lyx_2_6.py
+++ b/lib/lyx2lyx/lyx_2_6.py
@@ -181,6 +181,36 @@ def revert_xref_defs(document, prfx, form, counter, alias):
             )
 
 
+def split_respecting_groups(s):
+    """
+    Split a comma-separated string on top-level commas only,
+    ignoring commas that are inside a group
+    ("a, {b, c}, d" => ['a', '{b, c}', 'd']).
+    Also strips whitespace from each resulting item.
+    """
+    items = []
+    depth = 0
+    current = []
+
+    for char in s:
+        if char == '{':
+            depth += 1
+            current.append(char)
+        elif char == '}':
+            depth -= 1
+            current.append(char)
+        elif char == ',' and depth == 0:
+            items.append(''.join(current).strip())
+            current = []
+        else:
+            current.append(char)
+
+    # add the last item
+    if current:
+        items.append(''.join(current).strip())
+
+    return items
+
 
 ###############################################################################
 ###
@@ -1526,7 +1556,7 @@ def revert_mintedlangs(document):
         if k == -1:
             continue
         lp = get_quoted_value(document.body, "lstparams", k)
-        lps = lp.split(",")
+        lps = split_respecting_groups(lp)
         lps_res = []
         for l in lps:
             if "language=" in l: