diff mbox series

kconfig: merge_config: avoid false positive matches from comment lines

Message ID 1541145151-7319-1-git-send-email-yamada.masahiro@socionext.com (mailing list archive)
State New, archived
Headers show
Series kconfig: merge_config: avoid false positive matches from comment lines | expand

Commit Message

Masahiro Yamada Nov. 2, 2018, 7:52 a.m. UTC
The current SED_CONFIG_EXP could match to comment lines in config
fragment files, especially when CONFIG_PREFIX_ is empty. For example,
Buildroot uses empty prefixing; starting symbols with BR2_ is just
convention.

Make the sed expression more robust against false positives from
comment lines. The new sed expression matches to config options
followed by '=' or ' is not set'.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 scripts/kconfig/merge_config.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Petr Vorel Nov. 2, 2018, 10:44 p.m. UTC | #1
Hi Masahiro,

> The current SED_CONFIG_EXP could match to comment lines in config
> fragment files, especially when CONFIG_PREFIX_ is empty. For example,
> Buildroot uses empty prefixing; starting symbols with BR2_ is just
> convention.

> Make the sed expression more robust against false positives from
> comment lines. The new sed expression matches to config options
> followed by '=' or ' is not set'.

> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>

> -SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)[= ].*/\2/p"
> +SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)\(=.*\| is not set$\)/\2/p"

Good idea, thanks!


Kind regards,
Petr
diff mbox series

Patch

diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
index 7067a9f..180b523 100755
--- a/scripts/kconfig/merge_config.sh
+++ b/scripts/kconfig/merge_config.sh
@@ -103,7 +103,7 @@  if [ ! -r "$INITFILE" ]; then
 fi
 
 MERGE_LIST=$*
-SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)[= ].*/\2/p"
+SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(${CONFIG_PREFIX}[a-zA-Z0-9_]*\)\(=.*\| is not set$\)/\2/p"
 
 TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)