[llvm] [UTC] Escape multiple {{ or }} in input for check lines. (PR #71790)

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github-actions[bot] wrote:

<!--LLVM CODE FORMAT COMMENT: {darker}-->


:warning: Python code formatter, darker found issues in your code. :warning:

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``````````bash
darker --check --diff -r 129a91ec01a975e73aaaa9b5010f4085f4ad3cb9..a560cfbd2fc45ecfd7e73054d5866398b13ee162 llvm/utils/UpdateTestChecks/common.py
``````````

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View the diff from darker here.
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``````````diff
--- common.py	2023-11-09 16:11:21.000000 +0000
+++ common.py	2023-11-09 16:24:22.364380 +0000
@@ -1170,18 +1170,19 @@
         # including the commas and spaces.
         return match.group(1) + rv + match.group(match.lastindex)
 
     lines_with_def = []
     multiple_braces_re = re.compile(r"({{+)|(}}+)")
+
     def escape_braces(match_obj):
         s = match_obj.group(0)
-        escaped = ''
-        if s[0] == '{':
-            escaped = s.replace('{', '\\{')
+        escaped = ""
+        if s[0] == "{":
+            escaped = s.replace("{", "\\{")
         else:
-            escaped = s.replace('}', '\\}')
-        return ''.join(['{{', escaped, '}}'])
+            escaped = s.replace("}", "\\}")
+        return "".join(["{{", escaped, "}}"])
 
     for i, line in enumerate(lines):
         if not is_asm and not is_analyze:
             # An IR variable named '%.' matches the FileCheck regex string.
             line = line.replace("%.", "%dot")

``````````

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https://github.com/llvm/llvm-project/pull/71790