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ash: Remove unused EV_BACKCMD flag

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The original ash defered forking commands in backquotes so builtins
    could be run in the same context as the shell.  This behavior was
    controlled using the EV_BACKCMD to evaltree.

    Unfortunately, as Matthias Scheler noticed in 1999 (NetBSD PR/7814),
    the result was counterintuitive; for example, echo "`cd /`" would
    change the cwd.  So ash 0.3.5 left out that optimization.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2016-09-28 19:44:16 +02:00
parent eb17b6f6c9
commit 7ee7c6fc20
1 changed files with 0 additions and 1 deletions
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shell/ash.c
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@@ -8065,7 +8065,6 @@ static char *funcstring; /* block to allocate strings from */
/* flags in argument to evaltree */
#define EV_EXIT 01 /* exit after evaluating tree */
#define EV_TESTED 02 /* exit status is checked; ignore -e flag */
#define EV_BACKCMD 04 /* command executing within back quotes */
static const uint8_t nodesize[N_NUMBER] ALIGN1 = {
[NCMD ] = SHELL_ALIGN(sizeof(struct ncmd)),