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|
%prep
mkdir prompt.tmp
cd prompt.tmp
mydir=$PWD
SHLVL=2
setopt extendedglob
%test
hash -d mydir=$mydir
print -P ' %%%): %)
%%~: %~
%%d: %d
%%1/: %1/
%%h: %h
%%L: %L
%%M: %M
%%m: %m
%%n: %n
%%N: %N
%%i: %i
a%%{...%%}b: a%{%}b
'
0q:Basic prompt escapes as shown.
> %): )
> %~: ~mydir
> %d: $mydir
> %1/: ${mydir:t}
> %h: 0
> %L: 2
> %M: $HOST
> %m: ${HOST%%.*}
> %n: $USERNAME
> %N: (eval)
> %i: 2
> a%{...%}b: ab
>
true
print -P '%?'
false
print -P '%?'
0:`%?' prompt escape
>0
>1
PS4="%_> "
setopt xtrace
if true; then true; else false; fi
unsetopt xtrace
0:`%_' prompt escape
?if> true
?then> true
?> unsetopt xtrace
diff =(print -P '%#') =(print -P '%(!.#.%%)')
0:`%#' prompt escape and its equivalent
psvar=(caesar adsum jam forte)
print -P '%v' '%4v'
0:`%v' prompt escape
>caesar forte
true
print -P '%(?.true.false)'
false
print -P '%(?.true.false)'
0:ternary prompt escapes
>true
>false
print -P 'start %10<...<truncated at 10%<< Not truncated%3< ...<Not shown'
print -P 'start %10>...>truncated at 10%>> Not truncated%3> ...>Not shown'
0:prompt truncation
>start ...d at 10 Not truncated ...
>start truncat... Not truncated ...
# It's hard to check the time and date as they are moving targets.
# We therefore just check that various forms of the date are consistent.
# In fact, if you perform this at midnight it can still fail.
# We could test for that, but we can't be bothered.
# I hope LC_ALL is enough to make the format what's expected.
LC_ALL=C
date1=$(print -P %w)
date2=$(print -P %W)
date3=$(print -P %D)
if [[ $date1 != [A-Z][a-z][a-z][[:blank:]]##[0-9]## ]]; then
print "Date \`$date1' is not in the form \`Day DD' (e.g. \`Mon 1'"
fi
if [[ $date2 != [0-9][0-9]/[0-9][0-9]/[0-9][0-9] ]]; then
print "Date \`$date2' is not in the form \`DD/MM/YYYY'"
fi
if [[ $date3 != [0-9][0-9]-[0-9][0-9]-[0-9][0-9] ]]; then
print "Date \`$date3' is not in the form \`YY-MM-DD'"
fi
if (( $date1[5,-1] != $date2[4,5] )) || (( $date2[4,5] != $date3[7,8] ))
then
print "Days of month do not agree in $date1, $date2, $date3"
fi
if (( $date2[1,2] != $date3[4,5] )); then
print "Months do not agree in $date2, $date3"
fi
if (( $date2[7,8] != $date3[1,2] )); then
print "Years do not agree in $date2, $date3"
fi
0:Dates produced by prompt escapes
mkdir foo
mkdir foo/bar
mkdir foo/bar/rod
(zsh_directory_name() {
emulate -L zsh
setopt extendedglob
local -a match mbegin mend
if [[ $1 = d ]]; then
if [[ $2 = (#b)(*bar)/rod ]]; then
reply=(barmy ${#match[1]})
else
return 1
fi
else
if [[ $2 = barmy ]]; then
reply=($mydir/foo/bar)
else
return 1
fi
fi
}
# success
print ~[barmy]/anything
cd foo/bar/rod
print -P %~
# failure
setopt nonomatch
print ~[scuzzy]/rubbish
cd ../..
print -P %~
# catastrophic failure
unsetopt nonomatch
print ~[scuzzy]/rubbish
)
1q:Dynamic named directories
>$mydir/foo/bar/anything
>~[barmy]/rod
>~[scuzzy]/rubbish
>~mydir/foo
?(eval):33: no directory expansion: ~[scuzzy]
(
zsh_directory_name() {
emulate -L zsh
setopt extendedglob
local -a match mbegin mend
if [[ $1 = n ]]; then
if [[ $2 = *:l ]]; then
reply=(${2%%:l}/very_long_directory_name)
return 0
else
return 1
fi
else
if [[ $2 = (#b)(*)/very_long_directory_name ]]; then
reply=(${match[1]}:l ${#2})
return 0
else
return 1
fi
fi
}
parent=$PWD
dir=$parent/very_long_directory_name
mkdir $dir
cd $dir
fn() {
PS4='+%N:%i> '
setopt localoptions xtrace
# The following is the key to the test.
# It invokes zsh_directory_name which does PS4 output stuff
# while we're doing prompt handling for the parameter
# substitution. This checks recursion works OK.
local d=${(%):-%~}
print ${d//$parent/\<parent\>}
}
fn 2>stderr
# post process error to remove variable contents
while read line; do
# tricky: reply is set to include directory length which is variable
[[ $line = *reply* ]] && continue
print ${line//$parent/\<parent\>}
done <stderr >&2
)
0:Recursive use of prompts
>~[<parent>:l]
?+zsh_directory_name:1> emulate -L zsh
?+zsh_directory_name:2> setopt extendedglob
?+zsh_directory_name:3> local -a match mbegin mend
?+zsh_directory_name:4> [[ d == n ]]
?+zsh_directory_name:12> [[ <parent>/very_long_directory_name == (#b)(*)/very_long_directory_name ]]
?+zsh_directory_name:14> return 0
?+fn:7> local 'd=~[<parent>:l]'
?+fn:8> print '~[<parent>:l]'
|
