%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: $USERNAME > %N: (eval) > %i: 2 > a%{...%}b: ab > true print -P '%?' false print -P '%?' 0:`%?' prompt escape >0 >1 PS4="%_> " setopt xtrace if true; then true; else false; fi unsetopt xtrace 0:`%_' prompt escape ?if> true ?then> true ?> unsetopt xtrace diff =(print -P '%#') =(print -P '%(!.#.%%)') 0:`%#' prompt escape and its equivalent psvar=(caesar adsum jam forte) print -P '%v' '%4v' 0:`%v' prompt escape >caesar forte true print -P '%(?.true.false)' false print -P '%(?.true.false)' 0:ternary prompt escapes >true >false print -P 'start %10<......>truncated at 10%>> Not truncated%3> ...>Not shown' 0:prompt truncation >start ...d at 10 Not truncated ... >start truncat... Not truncated ... # It's hard to check the time and date as they are moving targets. # We therefore just check that various forms of the date are consistent. # In fact, if you perform this at midnight it can still fail. # We could test for that, but we can't be bothered. # I hope LC_ALL is enough to make the format what's expected. LC_ALL=C date1=$(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/\} } 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/\} done &2 ) 0:Recursive use of prompts >~[: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> [[ /very_long_directory_name == (#b)(*)/very_long_directory_name ]] ?+zsh_directory_name:14> return 0 ?+fn:7> local 'd=~[:l]' ?+fn:8> print '~[:l]'