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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-12 14:27:16 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-11-19 18:59:50 +0800 |
| commit | a29e9a1738a4e7040211842f3f3d90e172fa58ce (patch) | |
| tree | de70cc7263b01399ad572aae01e0ae07aac76844 /src/arith_yacc.h | |
| parent | main: Print \n upon EOF (CTRL-D) when run interactively (diff) | |
| download | dash-a29e9a1738a4e7040211842f3f3d90e172fa58ce.tar.gz dash-a29e9a1738a4e7040211842f3f3d90e172fa58ce.zip | |
expand: Fix multiple issues with EXP_DISCARD in evalvar
The commit 3cd538634f71538370f5af239f342aec48b7470b broke parameter
expansion in multiple ways because the EXP_DISCARD flag wasn't set
or tested for various cases:
$ src/dash -c 'var=; echo ${var:+nonempty}'
nonempty
$ src/dash -u -c 'unset foo bar; echo ${foo+${bar}}'
dash: 1: bar: parameter not set
$ src/dash -c 'foo=bar; echo ${foo=BUG}; echo $foo'
barBUG
bar
$
This patch fixes them by introducing a new discard variable that
tracks whether the extra word should be discarded or not when it
is parsed.
Reported-by: Martijn Dekker <martijn@inlv.org>
Fixes: 3cd538634f71 ("expand: Do not reprocess data when...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Reported-by: Martijn Dekker <martijn@inlv.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions