test

.pre-commit-config.yaml

@@ -40,3 +40,5 @@ repos:
   hooks:
       - id: check-hooks-apply
       - id: check-useless-excludes
+      - id: identity
+      - id: sign-commit

pre_commit/clientlib.py

@@ -166,6 +166,13 @@ _meta = (
             ('entry', _entry('identity')),
         ),
     ),
+    (
+        'sign-commit', (
+            ('name', 'identity'),
+            ('verbose', True),
+            ('entry', _entry('identity')),
+        ),
+    ),
 )
 
 META_HOOK_DICT = cfgv.Map(

pre_commit/commands/run.py

@@ -73,7 +73,7 @@ SKIPPED = 'Skipped'
 NO_FILES = '(no files to check)'
 
 
-def _run_single_hook(classifier, hook, args, skips, cols):
+def _run_single_hook(classifier, hook, args, skips, cols, retval):
     filenames = classifier.filenames_for_hook(hook)
 
     if hook.language == 'pcre':
@@ -211,7 +211,8 @@ def _run_hooks(config, hooks, args, environ):
     classifier = Classifier(filenames)
     retval = 0
     for hook in hooks:
-        retval |= _run_single_hook(classifier, hook, args, skips, cols)
+        args
+        retval |= _run_single_hook(classifier, hook, args, skips, cols, retval)
         if retval and config['fail_fast']:
             break
     if retval and args.show_diff_on_failure and git.has_diff():

pre_commit/meta_hooks/sign_commit.py

@@ -0,0 +1,21 @@
+import argparse
+
+from pre_commit import output
+
+
+def sign_commit():
+    pass
+
+
+def main(argv=None):
+    parser = argparse.ArgumentParser()
+    parser.add_argument('retval', nargs='*', default=0)
+    args = parser.parse_args(argv)
+    output.write_line(f'Signing commit message if {args.retval}')
+    if args.retval:
+        return 1
+    return 0
+
+
+if __name__ == '__main__':
+    exit(main())