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Fix up the history upon "fg"
- X-seq: zsh-users 3795
- From: "Bart Schaefer" <schaefer@xxxxxxxxxxxxxxxxxxxxxxx>
- To: zsh-users@xxxxxxxxxx
- Subject: Fix up the history upon "fg"
- Date: Wed, 4 Apr 2001 22:41:08 +0000
- Mailing-list: contact zsh-users-help@xxxxxxxxxx; run by ezmlm
Here's a possibly-handy function. When you use "fg" or "bg" (or one of
the abbreviations, e.g. "%+"), "getjobs" finds the original text of that
command and inserts it into the history, so that e.g., "!!" will execute
that command again rather than executing "fg" again.
If you use several arguments to "fg", e.g. "fg %2 %3 %1", the commands
for all those jobs are collected and concatenated with semicolons.
Arguably this could be implemented in C as an optional behavior of bin_fg,
so the fg command itself could be removed from the history and replaced
with the job text; but I'm not feeling that ambitious today.
This requires at least zsh-3.1.9, I think. Definitely not 3.0.anything.
# Call this from the preexec function like so:
# preexec() {
# getjobs "${(z)1}"
# }
getjobs () {
setopt localoptions noshwordsplit noksharrays
local texts
case $1 in
fg|bg) shift; [[ -n $1 ]] || set -- %% ;;
%*) ;;
*) return 0 ;;
esac
repeat $#
do
# This case statement emulates jobs.c:getjob()
case $1 in
%(|[%+])) 1=${(k)jobstates[(r)*:+:*]} ;;
%-) 1=${(k)jobstates[(r)*:-:*]} ;;
%<->) 1=${1#%} ;;
%[?]*) 1=${${(Ok)jobtexts[(R)*${1#%[?]}*]}[1]} ;;
*) 1=${${(Ok)jobtexts[(R)$1*]}[1]} ;;
esac
[[ -n $1 ]] && texts=($texts ${jobtexts[$1]})
shift
done
# Remove the "-s" below if you'd prefer that this just report
# what jobs are being affected rather than modify the history
(( $#texts )) && print -s ${(j:; :)texts}
return 0
}
--
Bart Schaefer Brass Lantern Enterprises
http://www.well.com/user/barts http://www.brasslantern.com
Zsh: http://www.zsh.org | PHPerl Project: http://phperl.sourceforge.net
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