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* [EXPAND] Fix ifsfirst/ifslastp leakHerbert Xu2010-09-08
| | | | | | | | | | | | | | | | As it stands expandarg may return with a non-NULL ifslastp which then confuses any subsequent ifsbreakup user that doesn't clear it directly. What's worse, if we get interrupted before we hit ifsfree in expandarg we will leak memory. This patch fixes this by always calling ifsfree in expandarg thus ensuring that ifslastp is always NULL on the normal path. It also adds an ifsfree call to the RESET path to ensure that memory isn't leaked. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [BUILTIN] Honor tab as IFS whitespace when splitting fields in readcmdStefan Potyra2009-08-11
| | | | | | | | | | | | | | | | | | | When I try to split fields by tabs, dash doesn't honour multiple tabs between fields as whitespace (at least that's how I interpret [1], please correct me if I'm wrong). #!/bin/sh # "1\t2\t\t3" TESTSTRING="1 2 3" # only "\t" IFS=" " echo "$TESTSTRING" | while read p1 p2 p3; do echo "p1=${p1}, p2=${p2}, p3=${p3}" done Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* [EXPAND] Expand here-documents in the current shell environmentHerbert Xu2007-11-11
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously we always expanded here-documents in a subshell. This is contrary to the POSIX specification and how other shells behave. What's more this slows down many expansions due to the extra fork (however, it must be said that it is possible for it speed up certain expansions by running it simultaneously with the command on two CPUs). This patch move the expansion into the current shell environment. Test case: unset a cat <<- EOF > /dev/null ${a=NOT} EOF echo ${a}BAD Old result: BAD New result: NOTBAD
* [ARITH] Add assignment and intmax_t supportHerbert Xu2007-10-11
| | | | | This patch adds assignment operator support in arithmetic expansions. It also changes the type used to intmax_t.
* [EXPAND] Move parse-time quote flag detection to run-timeHerbert Xu2007-09-25
| | | | | | | | | | | | | | | | | | | | Because the parser does not recursively parse parameter expansion with respect to quotes, we can't accurately determine quote status at parse time. This patch works around this by moving the quote detection to run-time where we do interpret it recursively. Test case: foo=\\ echo "<${foo#[\\]}>" Old result: <\> New result: <>
* [EXPAND] Do not expand tilde in parameter expansion within quotesHerbert Xu2007-09-25
| | | | | | | | | | | | | | | | | | | | | | | Previously code was added so that tilde expansion was carried out parameter expansions within double quotes. This change was made with reference the behaviour of bash at the time. Bash has since be fixed so that this behaviour no longer occurs which is in line with most other POSIX shells. So this patch removes that behaviour in dash as well. Test case: unset a echo "${a:-~root}" Old result: /root New result: ~root
* Copyright/licence updates and remove all traces of sys/cdefs.hHerbert Xu2005-10-29
| | | | | | | | | | | This change updates the BSD licence to the three-clause version since NetBSD has already done so. This makes dash GPL-compatible. It also adds Christos Zoulas (NetBSD ash maintainer) to the COPYING file. I've added "copyright by Herbert Xu" to most files. Finally all CVS IDs and inclusion of sys/cdefs.h have been removed. The latter is needed for support of klibc.
* Initial import.Herbert Xu2005-09-26