Update MD013/line-length default mode to prevent trailing non-whitespace text that begins *just over* the length limit (edge case).

2025-12-16 22:10:13 +01:00 · 2025-11-29 18:37:39 -08:00 · 2025-11-29 18:37:39 -08:00 · 8e974f95d5
commit 8e974f95d5
parent 601910116d
4 changed files with 79 additions and 9 deletions
--- a/lib/md013.mjs
+++ b/lib/md013.mjs
@ -64,7 +64,9 @@ export default {
      const inCode = codeBlockLineNumbers.has(lineNumber);
      const inTable = tableLineNumbers.has(lineNumber);
      const maxLength = inCode ? codeLineLength : (isHeading ? headingLineLength : lineLength);
-      const text = (strict || stern) ? line : line.replace(/\S*$/u, "");
+      // If not strict/stern, the last run of non-whitespace is allowed to go
+      // beyond the limit as long as it begins within the limit
+      const text = (strict || stern) ? line : line.replace(/\S*$/u, "#");
      if ((maxLength > 0) &&
          (includeCodeBlocks || !inCode) &&
          (includeTables || !inTable) &&