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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2021-01-04 03:50:38 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2021-01-04 03:50:38 +0100 |
| commit | 4e039bab375a273344b6c847daa04f13d8317c04 (patch) | |
| tree | d649d25cca538e2b59e83d0ed00efb965091c5bd | |
| parent | 3b053051c7c6f1e4776fce8a97d8f6a3c54f3f0e (diff) | |
| download | busybox-4e039bab375a273344b6c847daa04f13d8317c04.tar.gz | |
ash: improve --help
function old new delta
packed_usage 33504 33499 -5
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | shell/ash.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/shell/ash.c b/shell/ash.c index e24b74c03..37f9dd71b 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -314,9 +314,12 @@ typedef long arith_t; /* ============ Shell options */ +/* If you add/change options hare, update --help text too */ static const char *const optletters_optnames[] = { "e" "errexit", "f" "noglob", +/* bash has '-o ignoreeof', but no short synonym -I for it */ +/* (in bash, set -I disables invisible variables (what's that?)) */ "I" "ignoreeof", /* The below allowed this invocation: * ash -c 'set -i; echo $-; sleep 5; echo $-' @@ -325,9 +328,10 @@ static const char *const optletters_optnames[] = { * In our code, this is denoted by empty long name: */ "i" "", +/* (removing "i" altogether would remove it from "$-", not good) */ "m" "monitor", "n" "noexec", -/* Ditto: bash has no "set -s" */ +/* Ditto: bash has no "set -s", "set -c" */ "s" "", "c" "", "x" "xtrace", @@ -14265,7 +14269,8 @@ init(void) //usage:#define ash_trivial_usage -//usage: "[-/+OPTIONS] [-/+o OPT]... [-c 'SCRIPT' [ARG0 [ARGS]] / FILE [ARGS] / -s [ARGS]]" +//usage: "[-il] [-/+Cabefmnuvx] [-/+o OPT]... [-c 'SCRIPT' [ARG0 [ARGS]] / FILE [ARGS] / -s [ARGS]]" +//////// comes from ^^^^^^^^^^optletters //usage:#define ash_full_usage "\n\n" //usage: "Unix shell interpreter" |