# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 1714609242 -7200
# Node ID 6c39edd1d3487d1a72af368862bb70a07cd061c3
# Parent  fc317bd5b6375ea412be94fdb6fef0e970f31485
re2: make errors quiet

By default, the re2 library will output error on its own instead of keeping the
error in an exception. This make re2 printing spurious error before fallback to
the stdlib remodule that may accept the pattern or also fails to parse it and
raise a proper error that will be handled by Mercurial.

So we also pass an Option object that changes this default.

diff -r fc317bd5b637 -r 6c39edd1d348 mercurial/util.py
--- a/mercurial/util.py	Thu May 02 08:46:58 2024 +0200
+++ b/mercurial/util.py	Thu May 02 02:20:42 2024 +0200
@@ -2196,6 +2196,8 @@
 
 
 _re2_input = lambda x: x
+# google-re2 will need to be tell to not output error on its own
+_re2_options = None
 try:
     import re2  # pytype: disable=import-error
 
@@ -2216,6 +2218,7 @@
     def _checkre2():
         global _re2
         global _re2_input
+        global _re2_options
         if _re2 is not None:
             # we already have the answer
             return
@@ -2234,6 +2237,12 @@
             check_input = pycompat.sysstr(check_input)
             _re2 = bool(re2.match(check_pattern, check_input))
             _re2_input = pycompat.sysstr
+        try:
+            quiet = re2.Options()
+            quiet.log_errors = False
+            _re2_options = quiet
+        except AttributeError:
+            pass
 
     def compile(self, pat, flags=0):
         """Compile a regular expression, using re2 if possible
@@ -2249,7 +2258,12 @@
             if flags & remod.MULTILINE:
                 pat = b'(?m)' + pat
             try:
-                return re2.compile(_re2_input(pat))
+                input_regex = _re2_input(pat)
+                if _re2_options is not None:
+                    compiled = re2.compile(input_regex, options=_re2_options)
+                else:
+                    compiled = re2.compile(input_regex)
+                return compiled
             except re2.error:
                 pass
         return remod.compile(pat, flags)