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hush: make function support configurable

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This commit is contained in:
Denis Vlasenko
2009-04-13 14:23:12 +00:00
parent 323cbbfaa2
commit 2b2183a77d
3 changed files with 50 additions and 32 deletions
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35
shell/Config.in
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@@ -159,16 +159,15 @@ config HUSH
bool "hush"
default n
help
hush is a very small shell (just 18k) and it has fairly complete
Bourne shell grammar. It even handles all the normal flow control
options such as if/then/elif/else/fi, for/in/do/done, while loops,
case/esac.
hush is a small shell (22k). It handles the normal flow control
constructs such as if/then/elif/else/fi, for/in/do/done, while loops,
case/esac. Redirections, here documents, $((arithmetic))
and functions are supported.
It will compile and work on no-mmu systems.
It does not handle select, functions, here documents ( <<
word ), aliases, brace expansion, tilde expansion,
&> and >& redirection of stdout+stderr, etc.
It does not handle select, aliases, brace expansion,
tilde expansion, &>file and >&file redirection of stdout+stderr.
config HUSH_HELP
bool "help builtin"
@@ -226,6 +225,13 @@ config HUSH_CASE
help
Enable case ... esac statement in hush. +400 bytes.
config HUSH_FUNCTIONS
bool "Support funcname() { commands; } syntax"
default n
depends on HUSH
help
Enable support for shell functions in hush. +800 bytes.
config LASH
bool "lash (deprecated: aliased to hush)"
default n
@@ -237,16 +243,17 @@ config MSH
bool "msh (deprecated: please use hush)"
default n
help
The minix shell (adds just 30k) is quite complete and handles things
like for/do/done, case/esac and all the things you expect a Bourne
shell to do. It is not always pedantically correct about Bourne
shell grammar (try running the shell testscript "tests/sh.testcases"
on it and compare vs bash) but for most things it works quite well.
It uses only vfork, so it can be used on uClinux systems.
msh is deprecated and will be removed, please migrate to hush.
If there is a feature msh has but hush does not, please let us know.
# The minix shell (adds just 30k) is quite complete and handles things
# like for/do/done, case/esac and all the things you expect a Bourne
# shell to do. It is not always pedantically correct about Bourne
# shell grammar (try running the shell testscript "tests/sh.testcases"
# on it and compare vs bash) but for most things it works quite well.
# It uses only vfork, so it can be used on uClinux systems.
comment "Bourne Shell Options"
depends on MSH || LASH || HUSH || ASH

2
shell/hush.c
View File

@@ -83,8 +83,6 @@
* Keeping 1 for now even in released versions.
*/
#define HUSH_DEBUG 1
/* In progress... */
#define ENABLE_HUSH_FUNCTIONS 1
#if BUILD_AS_NOMMU