fix corner case

Author: tshepang

ci/sembr/src/main.rs

@@ -177,6 +177,9 @@ fn lengthen_lines(content: &str, limit: usize) -> String {
         let Some(next_line) = content.get(n + 1) else {
             continue;
         };
+        if next_line.trim_start().starts_with("```") {
+            continue;
+        }
         if ignore(next_line, in_code_block)
             || REGEX_LIST_ENTRY.is_match(next_line)
             || REGEX_IGNORE_END.is_match(line)
@@ -255,6 +258,12 @@ preserve next line
 
 preserve next line
 * three
+
+do not mess with code block chars
+```
+leave the
+text alone
+```
 ";
     let expected = "\
 do not split short sentences
@@ -269,6 +278,12 @@ preserve next line
 
 preserve next line
 * three
+
+do not mess with code block chars
+```
+leave the
+text alone
+```
 ";
     assert_eq!(expected, lengthen_lines(original, 50));
 }