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SubjectRe: [PATCH v3] checkpatch: fix TYPO_SPELLING check for words with apostrophe
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On Wed, 2020-12-02 at 00:37 +0530, Dwaipayan Ray wrote:
> checkpatch reports a false TYPO_SPELLING warning for some words
> containing an apostrophe when run with --codespell option.

Thanks.
Acked-by: Joe Perches <joe@perches.com>

>
> 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'?"
>
> Modify the regex pattern to be more in line with the codespell
> default word matching regex. This fixes the word capture and
> avoids the false warning.
>
> In addition, highlight the misspelled word location by adding a
> caret below the word.
>
> Suggested-by: Joe Perches <joe@perches.com>
> Reported-by: Peilin Ye <yepeilin.cs@gmail.com>
> Signed-off-by: Dwaipayan Ray <dwaipayanray1@gmail.com>
> ---
> Changes in v3:
> - Highlight misspelled word location using a caret
>
> Changes in v2:
> - Use the default codespell word regex.
> - Modify commit message to specify --codespell usage
>
>  scripts/checkpatch.pl | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 3c86ea737e9c..e8c1ed0b1fad 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3106,15 +3106,18 @@ 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 ($rawline =~ /(?:^|[^\w\-'`])($misspellings)(?:[^\w\-'`]|$)/gi) {
>   my $typo = $1;
> + my $blank = copy_spacing($rawline);
> + my $ptr = substr($blank, 0, $-[1]) . "^";
> + my $hereptr = "$hereline$ptr\n";
>   my $typo_fix = $spelling_fix{lc($typo)};
>   $typo_fix = ucfirst($typo_fix) if ($typo =~ /^[A-Z]/);
>   $typo_fix = uc($typo_fix) if ($typo =~ /^[A-Z]+$/);
>   my $msg_level = \&WARN;
>   $msg_level = \&CHK if ($file);
>   if (&{$msg_level}("TYPO_SPELLING",
> - "'$typo' may be misspelled - perhaps '$typo_fix'?\n" . $herecurr) &&
> + "'$typo' may be misspelled - perhaps '$typo_fix'?\n" . $hereptr) &&
>   $fix) {
>   $fixed[$fixlinenr] =~ s/(^|[^A-Za-z@])($typo)($|[^A-Za-z@])/$1$typo_fix$3/;
>   }


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