This is used to implement the POSIX behavior when OPTIND=1
- Call setvarsafe instead of setvar. If one ran
"getopts optstr badvariable"
where badvariable contained an illegal variable name, there was no way
to recover, since setvar() would longjmp on the error.
1. OPTIND value was not computed correctly when the argument was part of the
option string (i.e. for "l:" "-l 1" was working "-l1" was not). (PR/2505).
2. OPTARG was not being unset in case of errors [in the non POSIX error case].
3. optvar could be set to random values.
4. Option string starting with a : was not treated specially as POSIX
specifies (if the option string starts with a :, then there is no
error printed when there are missing option arguments or illegal options,
and OPTARG and optvar are being set specially).
5. Implemented getopts "opts" optvar [arg]. The optional argument case
was not implemented.
To do:
- what does Posix say about resetting the getopts state? Bash does it
by setting OPTIND=0; is that correct? Should we be doing the same thing?
- should we be using getopt(3) for everything internal to the shell? Is that
feasible because we might need to handle multiple invocations at once.
(1) it needs to be ALIGNed for both halves of the 'if,' and
(2) if you're going to claim that you now have ALIGN(newlen)
bytes left, you should have actually allocated
ALIGN(newlen), rather than just 'newlen' bytes.
and many user complaints why the shell hangs in echo "`"
- eval.c: Fix exitstatus invalid resetting in `if' statements were:
if (exit 3); then
echo foo $?
else
echo bar $?
fi
printed 'bar 0' instead of bar 3
symlinks. From Chris Demetriou <cgd@NetBSD.ORG>. Fixes PR #1776.
Changed so that INTOFF/INTON are paired in getpwd(). From Matthias
Pfaller <leo@marco.de>. Fixes PR #2130.
- restore parsing state after parsing old style command substitution.
The ';' in '`echo z;`' broke the following:
for i in 1; do
cat > /dev/tty << __EOF__
`echo z;`
__EOF__
done
cVS: Enter Log. Lines beginning with `CVS: ' are removed automatically
When not in a function, it skips the rest of the current input file.
Instances of `return' outside function definitions were previously ignored.
What does joe posix have to say about this?
[fixes PR/1444]
$ cat foo
echo $FOO
$ FOO=1 . ./foo
$ echo $FOO
Did not echo 1 at all. Now variable assignments before sourced scripts
are honored during and after the execution of the script.
false
foo=bar
echo $?
would print 1
Also fixed the long standing bug:
false
echo `echo $?`
would print 0
The exitstatus needs rethinking and rewriting. The trial and error method
is not very efficient
begin with a space, but contains one. Fixes PR bin/809.
#!/bin/sh
list="a b c "
echo "With ordinary IFS"
for i in $list;do
echo $i
done
IFS=":${IFS}"
echo "With changed IFS"
for i in $list;do
echo $i
done
Note that before the fix ":${IFS}" behaved differently than "${IFS}:".
thorpej