Fred Snurd <[email protected]> writes:
> Git fans like to know what branch is current, and bash's implementation
> of PS1 allows for update each time it is displayed. All of my attempts
> of adding a call to a ksh function into PS1 appear to be evaluated at
> the time that PS1 is set, but not upon each new display of the shell
> prompt. Does anyone have suggestions on how to have ksh execute
> a function upon each display of PS1?
Use single quotes, eg.
_ps1_err() {
local _rc=$?
[ "$_rc" -ne 0 ] && printf %s "$_red"
return "$_rc"
}
PS1='\h \w\[$(_ps1_err)\]\$\[$_nc\] '
--
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