checkpatch reports a false TYPO_SPELLING warning for some words
containing an apostrophe.

A false positive is "doesn't". Occurrence of the word causes
checkpatch to emit the following warning:

"WARNING: 'doesn'' may be misspelled - perhaps 'doesn't'?"

Check the word boundary for such cases so that words like
"doesn't", "zig-zag", etc. aren't misinterpreted due to wrong
splitting of the word by the \b regex metacharacter.

Reported-by: Peilin Ye <yepeilin...@gmail.com>
Tested-by: Peilin Ye <yepeilin...@gmail.com>
Signed-off-by: Dwaipayan Ray <dwaipayanr...@gmail.com>
---
 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3c86ea737e9c..be6d09929941 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3106,7 +3106,7 @@ sub process {
 # Check for various typo / spelling mistakes
                if (defined($misspellings) &&
                    ($in_commit_log || $line =~ /^(?:\+|Subject:)/i)) {
-                       while ($rawline =~ 
/(?:^|[^a-z@])($misspellings)(?:\b|$|[^a-z@])/gi) {
+                       while ($rawline =~ 
/(?:^|[^a-z@])($misspellings)(?:\b(?![^\w]?[a-z@]+)|$|[^a-z@])/gi) {
                                my $typo = $1;
                                my $typo_fix = $spelling_fix{lc($typo)};
                                $typo_fix = ucfirst($typo_fix) if ($typo =~ 
/^[A-Z]/);
-- 
2.27.0

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