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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This is a backport of upstream commit:
[EVAL] Make eval with empty arguments return 0
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Backported from dash:
eval: Return status in eval functions
The exit status is currently clobbered too early for case statements
and loops. This patch fixes it by making the eval functions return
the current exit status and setting them in one place -- evaltree.
Harald van Dijk pointed out a number of bugs in the original patch.
function old new delta
evalcommand 1226 1242 +16
cmdloop 383 398 +15
evalfor 223 227 +4
evalcase 271 275 +4
localcmd 348 350 +2
evaltreenr 927 928 +1
evaltree 927 928 +1
evalsubshell 150 151 +1
evalpipe 356 357 +1
parse_command 1585 1584 -1
evalloop 177 164 -13
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When "set -e" option is on, shell must exit when any command fails,
including compound commands of the form (compound-list) executed in a
subshell. Bash and dash shells have this behaviour.
Also add a corresponding testcase.
Signed-off-by: Rostislav Skudnov <rostislav@tuxera.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Where the POSIX shell allows functions to be defined as:
name () compound-command [ redirections ]
bash adds the alternative syntax:
function name [()] compound-command [ redirections ]
Implement this in ash's bash compatibility mode. Most compound
commands work (for/while/until/if/case/[[]]/{}); one exception is:
function f (echo "no way!")
The other two variants work:
f() (echo "ok")
function f() (echo "also ok")
function old new delta
parse_command 1555 1744 +189
tokname_array 232 240 +8
.rodata 155612 155566 -46
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(add/remove: 0/0 grow/shrink: 2/1 up/down: 197/-46) Total: 151 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The exec builtin should return an exit status of 127 if the command
can't be found. It doesn't: it returns 2.
If the command builtin is used to source a script that runs a second
script that doesn't exist ash should issue an error. Instead it seg
faults.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The command builtin should only check the default path, not $PATH,
when the -p flag is used along with -v/-V.
Based on commits 65ae84b (by Harald van Dijk) and 29ee27d (by Herbert
Xu) from git://git.kernel.org/pub/scm/utils/dash/dash.git).
function old new delta
commandcmd 72 87 +15
describe_command 437 450 +13
typecmd 84 86 +2
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Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Newline is a valid delimiter between the variable name and `in`
keyword in for loops.
Based on commit 22e8fb4 from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu.
function old new delta
parse_command 1568 1563 -5
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Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Commit 503a0b8 from git://git.kernel.org/pub/scm/utils/dash/dash.git
by Herbert Xu says:
>The parsebackquote flag is only used in a test where it always has the
>value zero. So we can remove it altogether.
The first statement is incorrect: parsebackquote is non-zero when
backquotes (as opposed to $(...)) are used for command substitution.
It is possible for the test to be executed with parsebackquote != 0 in
that case.
The test is question checks whether quotes have been closed, raising
the error "unterminated quoted string" if they haven't. There seems
to be no good reason to allow unclosed quotes within backquotes. Bash,
hush and dash (after commit 503a0b8) all treat the following as an error:
XX=`"pwd`
whereas BusyBox ash doesn't. It just ignores the unclosed quote and
executes pwd.
So, parsebackquote should be removed but not for the reason stated.
function old new delta
parsebackquote 1 - -1
readtoken1 3222 3182 -40
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Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
echo_main 297 336 +39
stpcpy - 22 +22
run_pipe 1561 1566 +5
pseudo_exec_argv 187 192 +5
hush_exit 75 80 +5
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Also, move [[ ]] comment to test.c and expand it
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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with testcase
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