From 77539190ab9ca49518cf7e7a7b052c913ca7709d Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Wed, 10 Jun 2009 14:09:48 +0200 Subject: [PATCH] added comments about [[ ]] to ash and hush. no code changes Signed-off-by: Denys Vlasenko --- shell/ash.c | 5 +++++ shell/hush.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/shell/ash.c b/shell/ash.c index 7843afa..c726ad4 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -8736,6 +8736,11 @@ static int ulimitcmd(int, char **) FAST_FUNC; * Additional operators: * || and && should work as -o and -a * =~ regexp match + * == should do _pattern match_ against right side. bash does this: + * # [[ *a* == bab ]] && echo YES + * # [[ bab == *a* ]] && echo YES + * YES + * != does the negated == (i.e., also with pattern matching) * Apart from the above, [[ expr ]] should work as [ expr ] */ diff --git a/shell/hush.c b/shell/hush.c index 54ab78b..245fb58 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -318,6 +318,11 @@ struct command { // Additional operators: // || and && should work as -o and -a // =~ regexp match +// == should do _pattern match_ against right side. bash does this: +// # [[ *a* == bab ]] && echo YES +// # [[ bab == *a* ]] && echo YES +// YES +// != does the negated == (i.e., also with pattern matching) // Apart from the above, [[ expr ]] should work as [ expr ] /* used for "export noglob=* glob* a=`echo a b`" */ -- 2.7.4