patch 9.0.0666: spacing-combining characters handled as composing

Problem: Spacing-combining characters handled as composing, causing text to take more space than expected. Solution: Handle characters marked with "Mc" not as composing. (closes #11282
vim · Oct 5, 2022 · 7beaf6a · 7beaf6a
1 parent 0816f47
commit 7beaf6a
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Showing 3 changed files with 164 additions and 128 deletions.
diff --git a/runtime/tools/unicode.vim b/runtime/tools/unicode.vim
@@ -158,7 +158,8 @@ func! BuildCombiningTable()
   let end = -1
   let ranges = []
   for p in s:dataprops
-    if p[2] == 'Mn' || p[2] == 'Mc' || p[2] == 'Me'
+    " The 'Mc' property was removed, it does take up space.
+    if p[2] == 'Mn' || p[2] == 'Me'
       let n = ('0x' . p[0]) + 0
       if start >= 0 && end + 1 == n
         " continue with same range.