- Use getpgrp() rather than getpgid(0).
(getpgrp() is already used elsewhere in this same file.)
- Use waitpid(-1, a, b) rather than wait3(a, b, NULL).
Fixes PR/30973 and applies the principle of least surprise.
Update documentation to match (including date).
(matches behaviour of pdksh - if not it's documentation)
when we try to set a trap on them it will not work. Also while I am here:
1. don't change the action status if the signal system call failed.
2. don't try to sigignore it if signal failed.
3. clear the signal mask in case our parent blocked it for us.
completion function.
Note that the libedit code will probably want fine-tuning!
While editing the man page, add a note that non-whitespace IFS chars are
terminators and can generate null arguments.
- IFS whitespace is now processes correctly,
- Trailing non-whitespace IFS characters are added to the last variable
iff a subsequent variable would have been assigned a non-null string.
Now passes the 'read' tests in http://www.research.att.com/~gsf/public/ifs.sh
from the end of output of commands inside $(...) substitutions.
If the program output is n*128+1 bytes long (ending in a \n) then the code
checks buf[-1] for another \n - looking an uninitialised stack.
On a big-endian system an integer of value 10 will satisfy this (unlikely
on little endian) and can happen depending on the last code path to use
a lot of stack!
This caused the problem with newvers.sh on sparc64 after ', 2005' was
added to the date list.
Fixed PR/28852
compare the lengths and then use memcmp() in the search code.
Speeds up one of my scripts by a facter of 2.
Increase the size of the variable hash table.
Cuts down time for script to execute from 60 seconds to 10.
Move variable search into a new function to hide the implementation
from most of the code, new version is slightly smaller than old.
background process
This happens because we vfork, and then open a named pipe with O_RDONLY
and block in the child. We avoid this, by opening the file with O_NONBLOCK,
and then reset it if we are vforked. XXX: this is an ugly fix.
which was unnecessarily changed in revision 1.50 while fixing other bugs.
That is, exit the shell if the last command in a || or && compound statement
is not short-circuited, and exits with a false status. I.e., the following
will cause the shell to exit:
set -e
false || false
While this is not the prescribed behavior in SUSv3, it is what our man page
documents, and it is what all of the following implementations do:
NetBSD /bin/ksh (pdksh)
bash
zsh
Solaris 9 /bin/sh
Solaris 9 /usr/xpg4/bin/sh
Solaris 9 /usr/bin/ksh
Tru64 /bin/sh
HP/UX 11 /bin/sh
The "standard" seems to be wrong in this instance.
