Re: [PATCH 2/3] checkpatch: testing more config for Kconfig help text

From: Joe Perches
Date: Thu Apr 21 2016 - 13:06:34 EST


On Thu, 2016-04-21 at 21:28 +0800, Yingjoe Chen wrote:
> Current help text check only check a config option if it is followed
> by another config.
> Adding check for help text if the next entry is menuconfig, choice/
> endchoice, comment, menu/endmenu, if/endif, source or end of file.
[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> @@ -2563,6 +2563,12 @@ sub process {
>   next if ($f =~ /^-/);
>   last if (!$file && $f =~ /^\@\@/);
>  
> + if ($f !~ /^[+\- ]/) {
> + # End of file
> + $is_end = 1;
> + last;
> + }
> +
>   if ($lines[$ln - 1] =~ /^\+\s*(?:bool|tristate)\s*\"/) {
>   $is_start = 1;
>   } elsif ($lines[$ln - 1] =~ /^\+\s*(?:---)?help(?:---)?$/) {
> @@ -2573,7 +2579,10 @@ sub process {
>   $f =~ s/#.*//;
>   $f =~ s/^\s+//;
>   next if ($f =~ /^$/);
> - if ($f =~ /^\s*config\s/) {
> + if ($f =~ /^\s*config\s/ || $f =~ /^\s*menuconfig\s/ || $f =~ /^\s*choice\s/ ||
> +     $f =~ /^\s*endchoice$/ || $f =~ /^\s*comment\s/ || $f =~ /^\s*menu\s/ ||
> +     $f =~ /^\s*endmenu$/ || $f =~ /^\s*if\s/ || $f =~ /^\s*endif$/ ||
> +     $f =~ /^\s*source\s/) {
>   $is_end = 1;
>   last;
>   }

This seems relatively verbose.
Also, because there's a substitution above that strips leading spaces,
the "^\s*" uses are unnecessary and can be simplified to ^

Maybe:
if ($f =~ /^(?:config\s|menuconfig\s|choice\s|endchoice\s*$|comment\s|menu\s|endmenu$|if\s|endif\s*$|source\s)