[PATCH] patman: add warning for invalid tag

[Patrick Delaunay <patrick.delaunay@foss.st.com>]

Add a error in patman tool when the commit message contents an invalid
tag "Serie-.*" instead of "Series-.*".

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
---
I create this patch to avoid my frequent mistake:
using "Serie-" tag instead of "Series-" as it is done in [1].

RE_INV_TAG can be extended to other frequent errors.

Any "Serie-" tag is refused with the patch, for example:

ValueError: Line 28: Invalid tag =
   'Serie-cc: Marek Behún <marek.behun@nic.cz>'

[1] http://patchwork.ozlabs.org/project/uboot/patch/20210720203353.1.I550b95f6d12d59aeef5b744d837dbb360037d39e@changeid/


 tools/patman/patchstream.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/patman/patchstream.py b/tools/patman/patchstream.py
index a44cd861af..b960292427 100644
--- a/tools/patman/patchstream.py
+++ b/tools/patman/patchstream.py
@@ -59,6 +59,9 @@ RE_DIFF = re.compile(r'^>.*diff --git a/(.*) b/(.*)$')
 # Detect a context line, like '> @@ -153,8 +153,13 @@ CheckPatch
 RE_LINE = re.compile(r'>.*@@ \-(\d+),\d+ \+(\d+),\d+ @@ *(.*)')
 
+# Detect line with invalid TAG
+RE_INV_TAG = re.compile('^Serie-([a-z-]*): *(.*)')
+
 # States we can be in - can we use range() and still have comments?
 STATE_MSG_HEADER = 0        # Still in the message header
 STATE_PATCH_SUBJECT = 1     # In patch subject (first line of log for a commit)
@@ -318,6 +321,7 @@ class PatchStream:
         leading_whitespace_match = RE_LEADING_WHITESPACE.match(line)
         diff_match = RE_DIFF.match(line)
         line_match = RE_LINE.match(line)
+        invalid_match = RE_INV_TAG.match(line)
         tag_match = None
         if self.state == STATE_PATCH_HEADER:
             tag_match = RE_TAG.match(line)
@@ -471,6 +475,11 @@ class PatchStream:
                 self._add_warn('Line %d: Ignoring Commit-%s' %
                                (self.linenum, name))
 
+        # Detect invalid tags
+        elif invalid_match:
+            raise ValueError("Line %d: Invalid tag = '%s'" %
+                (self.linenum, line))
+
         # Detect the start of a new commit
         elif commit_match:
             self._close_commit()
-- 
2.25.1