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authorDenys Vlasenko2016-09-28 19:44:16 +0200
committerDenys Vlasenko2016-09-28 19:44:16 +0200
commit7ee7c6fc20d3b94c257f829dece097ff339895ee (patch)
treecf9671d7c27905e7c5d1597ee51363325aeeca5c
parenteb17b6f6c99df4a132742facd43a9485bb7ac5a0 (diff)
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ash: Remove unused EV_BACKCMD flag
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>
-rw-r--r--shell/ash.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/shell/ash.c b/shell/ash.c
index ec006af..f395a16 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -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)),