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shell: clarify help text of CONFIG_{SH,BASH}_IS_* options

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Mention the behavior if user selects CONFIG_SH_IS_ASH but not
CONFIG_ASH. We will be explicit that invocations like "busybox ash"
will not work for such configuration.

Also clarify help text of CONFIG_BASH_IS_* that bash compatibility in
ash is not complete. (It shouldn't be anyway - ash can't support every
bash quirk out there.)

Signed-off-by: Kang-Che Sung <explorer09@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Kang-Che Sung 2017-01-04 12:29:04 +01:00 committed by Denys Vlasenko
parent c6137ba510
commit 9529115c4c
1 changed files with 22 additions and 1 deletions
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23
shell/Config.src
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@ -17,9 +17,19 @@ choice
config SH_IS_ASH
depends on !NOMMU
bool "ash"
help
Choose ash to be the shell executed by 'sh' name.
The ash code will be built into busybox. If you don't select
"ash" choice (CONFIG_ASH), this shell may only be invoked by
the name 'sh' (and not 'ash').
config SH_IS_HUSH
bool "hush"
help
Choose hush to be the shell executed by 'sh' name.
The hush code will be built into busybox. If you don't select
"hush" choice (CONFIG_HUSH), this shell may only be invoked by
the name 'sh' (and not 'hush').
config SH_IS_NONE
bool "none"
@ -31,7 +41,8 @@ choice
default BASH_IS_NONE
help
Choose which shell you want to be executed by 'bash' alias.
The ash shell is the most bash compatible and full featured one.
The ash shell is the most bash compatible and full featured one,
although compatibility is far from being complete.
Note that selecting this option does not switch on any bash
compatibility code. It merely makes it possible to install
@ -46,9 +57,19 @@ choice
config BASH_IS_ASH
depends on !NOMMU
bool "ash"
help
Choose ash to be the shell executed by 'bash' name.
The ash code will be built into busybox. If you don't select
"ash" choice (CONFIG_ASH), this shell may only be invoked by
the name 'bash' (and not 'ash').
config BASH_IS_HUSH
bool "hush"
help
Choose hush to be the shell executed by 'bash' name.
The hush code will be built into busybox. If you don't select
"hush" choice (CONFIG_HUSH), this shell may only be invoked by
the name 'bash' (and not 'hush').
config BASH_IS_NONE
bool "none"