[gcc r12-7844] gcc-changelog: Make This reverts stricter.

[Martin Liska <marxin@gcc.gnu.org>]

https://gcc.gnu.org/g:c8464cf444e8f41f6c10cb75cfa899c838f8d506

commit r12-7844-gc8464cf444e8f41f6c10cb75cfa899c838f8d506
Author: Martin Liska <mliska@suse.cz>
Date:   Mon Mar 28 12:29:29 2022 +0200

    gcc-changelog: Make This reverts stricter.
    
    contrib/ChangeLog:
    
            * gcc-changelog/git_commit.py: Make the parsing stricter.

Diff:
---
 contrib/gcc-changelog/git_commit.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/contrib/gcc-changelog/git_commit.py b/contrib/gcc-changelog/git_commit.py
index 95dc49e5d48..7e29934b4ad 100755
--- a/contrib/gcc-changelog/git_commit.py
+++ b/contrib/gcc-changelog/git_commit.py
@@ -165,7 +165,7 @@ star_prefix_regex = re.compile(r'\t\*(?P<spaces>\ *)(?P<content>.*)')
 end_of_location_regex = re.compile(r'[\[<(:]')
 item_empty_regex = re.compile(r'\t(\* \S+ )?\(\S+\):\s*$')
 item_parenthesis_regex = re.compile(r'\t(\*|\(\S+\):)')
-revert_regex = re.compile(r'This reverts commit (?P<hash>\w+).$')
+revert_regex = re.compile(r'This reverts commit (?P<hash>[0-9a-f]+).$')
 cherry_pick_regex = re.compile(r'cherry picked from commit (?P<hash>\w+)')
 
 LINE_LIMIT = 100
@@ -317,7 +317,7 @@ class GitCommit:
 
         # Identify first if the commit is a Revert commit
         for line in self.info.lines:
-            m = revert_regex.match(line)
+            m = revert_regex.fullmatch(line)
             if m:
                 self.revert_commit = m.group('hash')
                 break