.zsh/functions/prompt_ganneff_setup

   1 # -*- mode:sh -*-
   2
   3 # This prompt is based on work of other people.
   4 #
   5 # The prompt itself is based on various others:
   6 #   - The "design" is taken from Phil!'s ZSH prompt, as found on
   7 #     http://aperiodic.net/phil/prompt/
   8 #
   9 #   - The tech using zstyle is inspired by the prompt as used by
  10 #     the grml-live system <http://grml.org>, see
  11 #     http://git.grml.org/?p=grml-etc-core.git;a=summary for details
  12 #     on theirs.
  13 #     A good number of their support functions are also taken, though
  14 #     they got renamed from grml_* to ganneff_* to have a single namespace
  15 #     here.
  16 #
  17 #   - The winch function as seen in the prompt theme "bart", delivered
  18 #     with zsh
  19
  20 prompt_ganneff_help () {
  21     cat <<__EOF0__
  22   prompt ganneff
  23
  24     This is the prompt as used by (who would have guessed) Ganneff.  By
  25     default it is a two-line prompt.  You can find its latest version at
  26     http://git.ganneff.de/cgi-bin/gitweb.cgi?p=zsh.git;a=summary
  27
  28     The prompt itself is based on various others:
  29       - The "design" is taken from Phil!'s ZSH prompt, as found on
  30         http://aperiodic.net/phil/prompt/
  31
  32       - The technic using zstyle is inspired by the prompt as used by
  33         the grml-live system <http://grml.org>, see
  34         http://git.grml.org/?p=grml-etc-core.git;a=summary for details
  35         on theirs.
  36
  37     The prompt integrates with zsh's prompt themes system and uses the
  38     zstyle system for its configuration. It is configurable as much as
  39     seems to make sense. In particular, these aspects are customisable:
  40
  41         - The items used in the prompt and their order (e.g. you can
  42           remove \`user' from the list of activated items, which will
  43           cause the user name to be omitted from the prompt string).
  44
  45         - The attributes used with the items are customisable via strings
  46           used before and after the actual item.
  47
  48         - An itemset for "small terminals" can be provided. That is, if the
  49           length of the upper line exceeds the terminal width, various
  50           items get removed from the prompt to (hopefully) make it still
  51           look good. Obviously this only works down to a limit.
  52
  53     The available items are: at, battery, change-root, date, history,
  54     host, jobs, newline, path, percent, rc, rc-always, shell-level,
  55     time, user, vcs, ulcorner, llcorner, urcorner, lrcorner, line, pts,
  56     openbracket, closebracket, pipe, space, flexline
  57
  58     Most of those should be self-explanatory, some may need more:
  59      line     - Draws a single line character
  60      XYcorner - Draws a corner. The chars to replace XY are
  61                 X=u for upper, l for lower
  62                 Y=l for left, r for right
  63      flexline - Same as line, but flexible length to fill remaining space
  64                 Only works in a two-line prompt in the upper line, that
  65                 is, a newline MUST appear in the setup!
  66
  67     Should they not fit your need, there is an easy way to have the
  68     prompt include basically anything you want. Just define your own
  69     items. For that you simply define them inside the
  70     ':prompt:ganneff:extra:' namespace.
  71
  72     Example: To have the prompt include the value of the variable
  73     \$FOOBAR, in red and have the variable updated by the function
  74     jj_foobar, use the following:
  75
  76        zstyle ':prompt:ganneff:extra:foobar' pre '${PR_RED}'
  77        zstyle ':prompt:ganneff:extra:foobar' post '${PR_NO_COLOR}'
  78        zstyle ':prompt:ganneff:extra:foobar' token '$FOOBAR'
  79        zstyle ':prompt:ganneff:extra:foobar' precmd jj_foobar
  80
  81     Now you can add the token \`foobar' to the list of items and voila,
  82     your own stuff appears.
  83
  84     Note that the function part only works in zsh 4.3.5 or later (I've
  85     been to lazy to replace add-zsh-hook with something for the older
  86     versions).
  87
  88
  89     The configuration of the predefined items can also be changed using
  90     zsh's \`zstyle' mechanism. The context, that is used while looking
  91     up styles is:
  92
  93         ':prompt:ganneff:<left-or-right>:<full-or-small>:<subcontext>'
  94
  95     Here <left-or-right> is either \`left' or \`right', signifying
  96     whether the style should affect the left or the right prompt.
  97
  98     <full-or-small> is either \`full' or \`small' and only valid in the
  99     item selection, signifying wether the item list should affect the
 100     full length or the "small terminal" prompt. As "small terminal"
 101     prompt does not display the right side prompt, <full-or-small> has
 102     no effect on the right side prompt.
 103
 104     <subcontext> is either \`setup' or 'items:<item>', where \`<item>'
 105     is one of the available items.
 106
 107     The styles/settings available under ':prompt:ganneff:':
 108
 109         - vcs_info (boolean): If \`true' (the default), use \`vcs_info'.
 110
 111         - set_vcs_info_defaults (boolean): If \`true' (the default),
 112           various vcs_info settings will be done. If unset or \`false'
 113           it is assumed that the user has already done this.
 114
 115           The default setup is:
 116             zstyle ':vcs_info:*' max-exports 1
 117             zstyle ':vcs_info:*' use-prompt-escapes
 118             zstyle ':vcs_info:*' use_simple
 119             zstyle ':vcs_info:*' stagedstr      "!"
 120             zstyle ':vcs_info:*' unstagedstr    "?"
 121             zstyle ':vcs_info:*' check-for-changes true
 122             zstyle ':vcs_info:(sv[nk]|bzr):*' branchformat \
 123                       "\${PR_YELLOW}%b%{\${PR_RED}%}:\${PR_YELLOW}%r\${PR_NO_COLOR}"
 124             zstyle ':vcs_info:*' formats \
 125                       "(\${PR_YELLOW}%s\${PR_NO_COLOR})-[\${PR_GREEN}%b\${PR_NO_COLOR}]%m%u%c "
 126             zstyle ':vcs_info:*' actionformats \
 127                       "(\${PR_YELLOW}%s\${PR_NO_COLOR})-[\${PR_GREEN}%b\${PR_NO_COLOR}-\${PR_RED}(%a)\${PR_NO_COLOR}]%m%u%c "
 128
 129         - colors (boolean): If \`true' (the default), use colors. b/w
 130           otherwise.
 131
 132         - nicelines (boolean): If \`true' (the default), use special
 133           magic to draw nice lines and corners. Might not work on every
 134           terminal. If false, draws using plain ascii characters.
 135           Linux console also seems to identify itself as if it could,
 136           but then doesn't do drawing right (not in our way at least).
 137
 138         - battery (string): If \`none' then no battery function at all.
 139           If either \`ibam' or \`acpi' then use those tools to gather
 140           the current battery level.
 141
 142         - use-rprompt (boolean): If \`true' (the default), print the
 143           right side prompt.
 144
 145         - items (list): The list of items used in the prompt. If \`vcs' is
 146           present in the list, the theme's code invokes \`vcs_info'
 147           accordingly. Default (left): rc change-root user at host path vcs
 148           percent; Default (right): sad-smiley
 149
 150     Note that both, nicelines and colors are forced to false in case the
 151     TERM variable is set to dumb.
 152
 153     Available styles in 'items:<item>' are: pre, post, token and precmd.
 154     Pre and Post are strings that are inserted before (pre) and after
 155     (post) the item in question. Token is the token itself that gets
 156     inserted into PS1. Thus, the following would cause the
 157     user name to be printed in red instead of the default blue:
 158
 159         zstyle ':prompt:ganneff:*:items:user' pre '\${PR_RED}'
 160
 161     and
 162
 163         zstyle ':prompt:ganneff:*:items:date' token '%D{%Y-%m-%d [d:%j/w:%V]}'
 164
 165     will output a very different date token compared with the default
 166     definition of '%D{%Y-%m-%d}'.
 167
 168     Note, that in the above example the \`post' style may remain at its
 169     default value, because its default value is '\${PR_NO_COLOR}', which
 170     turns the foreground text attribute off (which is exactly, what is
 171     still required with the new \`pre' value).
 172
 173     Possible values for the colors: \${PR_XXX} and \${PR_BOLD_XXX} with
 174     XXX replaced with one of: RED GREEN YELLOW BLUE MAGENTA CYAN WHITE BLACK.
 175     \${PR_NO_COLOR} resets color.
 176     Using the \${PR_XXX} values instead of zsh's internal \%F{xxx} allows
 177     the usage of the colors style to turn of prompt colors easily.
 178
 179     Last note: You really want to have "setopt promptsubst", otherwise you
 180     won't like this prompt.
 181 __EOF0__
 182 }
 183
 184 prompt_ganneff_setup () {
 185     emulate -L zsh
 186     setopt nolocaltraps
 187
 188     # We forcefully overwrite colors and nicelines setting for a dumb
 189     # terminal.
 190     if [[ "$TERM" == "dumb" ]]; then
 191         zstyle ':prompt:ganneff' colors false
 192         zstyle ':prompt:ganneff' nicelines false
 193     fi
 194
 195     # See if we can and should use extended characters to look nicer.
 196     if zstyle -t ':prompt:ganneff' nicelines; then
 197         typeset -A altchar
 198         set -A altchar ${(s..)terminfo[acsc]}
 199         # Some stuff to help us draw nice lines
 200         PR_SET_CHARSET="%{$terminfo[enacs]%}"
 201         PR_SHIFT_IN="%{$terminfo[smacs]%}"
 202         PR_SHIFT_OUT="%{$terminfo[rmacs]%}"
 203         PR_HBAR=${altchar[q]:--}
 204         PR_ULCORNER=${altchar[l]:--}
 205         PR_LLCORNER=${altchar[m]:--}
 206         PR_LRCORNER=${altchar[j]:--}
 207         PR_URCORNER=${altchar[k]:--}
 208     else
 209         PR_SET_CHARSET=""
 210         PR_SHIFT_IN=""
 211         PR_SHIFT_OUT=""
 212         PR_HBAR="-"
 213         PR_ULCORNER=""
 214         PR_LLCORNER=""
 215         PR_LRCORNER=""
 216         PR_URCORNER=""
 217     fi
 218
 219     if zstyle -t ':prompt:ganneff' colors; then
 220         if [[ -n "${BLUE}" ]] && [[ -n "${YELLOW}" ]]; then
 221             # Two defined, so we assume someone already defined themself
 222             # the colors. We just use them and not setup our own.
 223             for color in RED GREEN YELLOW BLUE MAGENTA CYAN WHITE; do
 224                 eval PR_$color='%{${(P)color}%}'
 225                 eval PR_BOLD_$color='%{$terminfo[bold]${(LP)color}%}'
 226             done
 227             PR_NO_COLOR="%{${reset_color}%}"
 228         else
 229             # Seems like colors are not defined, so set them up
 230             # This duplicates docolors from 01_Terminfo.zsh, but is here to have
 231             # prompt_ganneff_setup not require anything else from my dotfiles
 232             if autoload -Uz colors && colors 2>/dev/null ; then
 233                 for COLOR in RED GREEN YELLOW BLUE MAGENTA CYAN BLACK WHITE; do
 234                     eval PR_$COLOR='%{$fg_no_bold[${(L)COLOR}]%}'
 235                     eval PR_BOLD_$COLOR='%{$fg_bold[${(L)COLOR}]%}'
 236                 done
 237                 eval PR_NO_COLOR='%{$reset_color%}'
 238             else
 239                 PR_BLUE=$'%{\e[1;34m%}'
 240                 PR_RED=$'%{\e[1;31m%}'
 241                 PR_GREEN=$'%{\e[1;32m%}'
 242                 PR_CYAN=$'%{\e[1;36m%}'
 243                 PR_WHITE=$'%{\e[1;37m%}'
 244                 PR_MAGENTA=$'%{\e[1;35m%}'
 245                 PR_YELLOW=$'%{\e[1;33m%}'
 246                 PR_NO_COLOR=$'%{\e[0m%}'
 247             fi
 248         fi
 249     else
 250         PR_BLUE=''
 251         PR_RED=''
 252         PR_GREEN=''
 253         PR_CYAN=''
 254         PR_WHITE=''
 255         PR_MAGENTA=''
 256         PR_YELLOW=''
 257         PR_NO_COLOR="%{${reset_color}%}"
 258     fi
 259
 260     # Easy things first.
 261     # The secondary prompt, printed when the shell needs more
 262     # information to complete a command. %_ displays any shell constructs
 263     # or quotation marks which are currently being processed.
 264     if zstyle -t ':prompt:ganneff' nicelines; then
 265         PS2='${PR_CYAN}${PR_SHIFT_IN}${PR_HBAR}${PR_BLUE}${PR_HBAR}${PR_SHIFT_OUT}\
 266 (${PR_GREEN}%_${PR_BLUE})\
 267 ${PR_SHIFT_IN}${PR_HBAR}${PR_CYAN}${PR_HBAR}${PR_SHIFT_OUT}${PR_NO_COLOR} '
 268     else
 269         PS2='-(%_)- '
 270     fi
 271     # selection prompt used within a select loop.
 272     PS3='?# '
 273     # the execution trace prompt (setopt xtrace). default: '+%N:%i>'
 274     PS4='+%N:%i:%_> '
 275
 276     if zstyle -t ':prompt:ganneff' vcs_info && \
 277         is439 && autoload -Uz vcs_info && vcs_info; then
 278         if zstyle -t ':prompt:ganneff' set_vcs_info_defaults; then
 279             # gather version control information for inclusion in a prompt
 280             # we will only be using one variable, so let the code know now.
 281             zstyle ':vcs_info:*' max-exports 1
 282             zstyle ':vcs_info:*' use-prompt-escapes
 283             zstyle ':vcs_info:*' use_simple
 284             zstyle ':vcs_info:*' stagedstr      "!"
 285             zstyle ':vcs_info:*' unstagedstr    "?"
 286             zstyle ':vcs_info:*' check-for-changes true
 287
 288             # change vcs_info formats for the prompt
 289             zstyle ':vcs_info:(sv[nk]|bzr):*' branchformat "${PR_YELLOW}%b%{${PR_RED}%}:${PR_YELLOW}%r${PR_NO_COLOR}"
 290             zstyle ':vcs_info:*' formats "(${PR_YELLOW}%s${PR_NO_COLOR})-[${PR_GREEN}%b${PR_NO_COLOR}]%m%u%c "
 291             zstyle ':vcs_info:*' actionformats "(${PR_YELLOW}%s${PR_NO_COLOR})-[${PR_GREEN}%b${PR_NO_COLOR}-${PR_RED}(%a)${PR_NO_COLOR}]%m%u%c "
 292         fi
 293     fi
 294
 295     # These maps define default tokens and pre-/post-decoration for items to be
 296     # used within the themes. All defaults may be customised in a context sensitive
 297     # matter by using zsh's `zstyle' mechanism.
 298     typeset -gA ganneff_prompt_pre_default \
 299         ganneff_prompt_post_default \
 300         ganneff_prompt_token_default
 301
 302     ganneff_prompt_pre_default=(
 303         at                ''
 304         battery           ' '
 305         change-root       ''
 306         date              '${PR_BLUE}'
 307         history           '${PR_GREEN}'
 308         host              '${PR_RED}'
 309         jobs              '${PR_CYAN}'
 310         newline           ''
 311         path              '${PR_MAGENTA}'
 312         percent           ''
 313         rc                '${PR_RED}'
 314         rc-always         ''
 315         shell-level       '${PR_RED}'
 316         time              '${PR_BLUE}'
 317         user              '${PR_BLUE}'
 318         vcs               ''
 319         ulcorner          '${PR_SHIFT_IN}'
 320         llcorner          '${PR_SHIFT_IN}'
 321         urcorner          '${PR_SHIFT_IN}'
 322         lrcorner          '${PR_SHIFT_IN}'
 323         line              '${PR_SHIFT_IN}'
 324         pts               ''
 325         openbracket       ''
 326         closebracket      ''
 327         pipe              ''
 328         space             ''
 329         flexline          '${PR_SHIFT_IN}'
 330     )
 331
 332     ganneff_prompt_post_default=(
 333         at                ''
 334         battery           ''
 335         change-root       ''
 336         date              '${PR_NO_COLOR}'
 337         history           '${PR_NO_COLOR}'
 338         host              '${PR_NO_COLOR}'
 339         jobs              '${PR_NO_COLOR}'
 340         newline           ''
 341         path              '${PR_NO_COLOR}'
 342         percent           ''
 343         rc                '${PR_NO_COLOR}'
 344         rc-always         ''
 345         shell-level       '${PR_NO_COLOR}'
 346         time              '${PR_NO_COLOR}'
 347         user              '${PR_NO_COLOR}'
 348         vcs               ''
 349         ulcorner          '${PR_SHIFT_OUT}'
 350         llcorner          '${PR_SHIFT_OUT}'
 351         urcorner          '${PR_SHIFT_OUT}'
 352         lrcorner          '${PR_SHIFT_OUT}'
 353         line              '${PR_SHIFT_OUT}'
 354         pts               ''
 355         openbracket       ''
 356         closebracket      ''
 357         pipe              ''
 358         space             ''
 359         flexline          '${PR_SHIFT_OUT}'
 360     )
 361
 362     ganneff_prompt_token_default=(
 363         at                '@'
 364         battery           'PERCENT'
 365         change-root       'debian_chroot'
 366         date              '%D{%Y-%m-%d}'
 367         history           '{#%!}'
 368         host              '%m'
 369         jobs              '[%j running job(s)] '
 370         newline           $'\n'
 371         path              '%40<..<%~%<<'
 372         percent           '% # '
 373         rc                '%(?..%? )'
 374         rc-always         '%?'
 375         shell-level       '%(2L.%L.)'
 376         time              '%D{%H:%M:%S}'
 377         user              '%n'
 378         vcs               '0'
 379         ulcorner          '${PR_ULCORNER}'
 380         llcorner          '${PR_LLCORNER}'
 381         urcorner          '${PR_URCORNER}'
 382         lrcorner          '${PR_LRCORNER}'
 383         line              '${PR_HBAR}'
 384         pts               ':%y'
 385         openbracket       '('
 386         closebracket      ')'
 387         pipe              '|'
 388         space             ' '
 389         flexline          'PR_FLEXLINE'
 390     )
 391
 392     PR_FLEXLINE=""
 393     add-zsh-hook precmd prompt_ganneff_precmd
 394     # Call the winch function once to ensure the length gets calculated
 395     # correctly
 396     prompt_ganneff_winch
 397     local pr_battery
 398     zstyle -s ':prompt:ganneff' battery pr_battery
 399     if [[ $pr_battery != "none" ]]; then
 400         add-zsh-hook precmd prompt_ganneff_battery
 401         prompt_ganneff_battery
 402     fi
 403
 404     functions[TRAPWINCH]="${functions[TRAPWINCH]//prompt_ganneff_winch}
 405         prompt_ganneff_winch"
 406 }
 407
 408 prompt_ganneff_precmd () {
 409     emulate -L zsh
 410     setopt nolocaltraps
 411
 412     zstyle -t ':prompt:ganneff' vcs_info && vcs_info
 413     local -a left_items right_items
 414     left_items=(ulcorner line openbracket user at host pts closebracket line history flexline
 415                          openbracket path closebracket line urcorner newline
 416                 llcorner line rc openbracket time closebracket line vcs line change-root pipe space)
 417     PR_PS1=""; nomore=0
 418     ganneff_prompt_addto PS1 full "${left_items[@]}"
 419     if zstyle -T ":prompt:ganneff:right:setup" use-rprompt; then
 420         right_items=(space pipe line openbracket date closebracket line lrcorner)
 421         ganneff_prompt_addto RPS1 full "${right_items[@]}"
 422     fi
 423
 424     # Now a kind-of-hack to reduce the prompt when we run out of space.
 425     promptsize=${#PR_PS1}
 426     if [[ ${promptsize} -lt ${TERMWIDTH} ]]; then
 427         # the q here should be ${PR_HBAR}, but for some reason zsh didn't like me,
 428         # so meh
 429         if zstyle -t ':prompt:ganneff' nicelines && [[ "$TERM" != dumb ]] \
 430             && [[ "$TERM" != "linux" ]]; then
 431             PR_FLEXLINE="${(l.(($TERMWIDTH - $promptsize ))..q.)}"
 432         else
 433             PR_FLEXLINE="${(l.(($TERMWIDTH - $promptsize ))..-.)}"
 434         fi
 435     else
 436         # Small size prompt is needed
 437         left_items=(ulcorner line openbracket user at host closebracket line openbracket path closebracket newline
 438             llcorner line rc openbracket time closebracket line vcs line pipe space)
 439         ganneff_prompt_addto PS1 small "${left_items[@]}"
 440         # And with a small prompt, we don't show the right size at all.
 441         RPS1=""
 442     fi
 443 }
 444
 445 prompt_ganneff_length () {
 446     (( TERMWIDTH = ${COLUMNS} - 1 ))
 447 }
 448
 449 prompt_ganneff_winch () {
 450     emulate -L zsh
 451     setopt nolocaltraps noksharrays unset
 452
 453     # Delete ourself from TRAPWINCH if not using our precmd insert.
 454     [[ $precmd_functions = *prompt_ganneff_precmd* ]] && prompt_ganneff_length ||
 455         functions[TRAPWINCH]="${functions[TRAPWINCH]//prompt_ganneff_winch}"
 456 }
 457
 458 ganneff_typeset_and_wrap () {
 459     emulate -L zsh
 460     local target="$1"
 461     local new="$2"
 462     local left="$3"
 463     local right="$4"
 464
 465     if (( ${+parameters[$new]} )); then
 466         typeset -g "${target}=${(P)target}${left}${(P)new}${right}"
 467     fi
 468 }
 469
 470 ganneff_prompt_addto () {
 471     emulate -L zsh
 472     local target="$1"
 473     local size="$2"
 474     local lr it apre apost new v prefunc
 475     local -a items
 476     shift
 477     shift
 478
 479     [[ $target == PS1 ]] && lr=left || lr=right
 480     zstyle -a ":prompt:ganneff:${lr}:${size}:setup" items items || items=( "$@" )
 481     typeset -g "${target}="
 482     for it in "${items[@]}"; do
 483         zstyle -s ":prompt:ganneff:${lr}:items:$it" pre apre \
 484             || zstyle -s ":prompt:ganneff:extra:$it" pre apre \
 485             || apre=${ganneff_prompt_pre_default[$it]}
 486         zstyle -s ":prompt:ganneff:${lr}:items:$it" post apost \
 487             || zstyle -s ":prompt:ganneff:extra:$it" post apost \
 488             || apost=${ganneff_prompt_post_default[$it]}
 489         zstyle -s ":prompt:ganneff:${lr}:items:$it" token new \
 490             || zstyle -s ":prompt:ganneff:extra:$it" token new \
 491             || new=${ganneff_prompt_token_default[$it]}
 492
 493         # Now check if there is the wish for a precmd function and if so,
 494         # run it
 495         zstyle -s ":prompt:ganneff:extra:$it" precmd prefunc
 496         if [[ -n "${prefunc}" ]]; then
 497             ${prefunc} || true
 498         fi
 499
 500         typeset -g "${target}=${(P)target}${apre}"
 501         # Store the expanded value in PR_PS1, as we use that for length calculations
 502         [[ $it == "newline" ]] && nomore=1
 503         if [[ $nomore -eq 0 ]] && [[ $it != "flexline" ]] &&  PR_PS1+=${(e%)new}
 504         case $it in
 505             battery)
 506                 ganneff_typeset_and_wrap $target $new '' ''
 507                 ;;
 508             change-root)
 509                 ganneff_typeset_and_wrap $target $new '(' ')'
 510                 ;;
 511             flexline)
 512                 typeset -g "${target}=${(P)target}\${${new}}"
 513                 ;;
 514             ganneff-chroot)
 515                 if [[ -n ${(P)new} ]]; then
 516                     typeset -g "${target}=${(P)target}(CHROOT)"
 517                 fi
 518                 ;;
 519             vcs)
 520                 v="vcs_info_msg_${new}_"
 521                 if (( ${+parameters[$v]} )) && [[ -n "${(P)v}" ]]; then
 522                     typeset -g "${target}=${(P)target}${(P)v}"
 523                 fi
 524                 ;;
 525             *) typeset -g "${target}=${(P)target}${new}" ;;
 526         esac
 527         typeset -g "${target}=${(P)target}${apost}"
 528     done
 529 }
 530
 531 prompt_ganneff_battery() {
 532     zstyle -s ':prompt:ganneff' battery pr_battery
 533     case $pr_battery in
 534             ibam)
 535                     local ACPIDATA=$(ibam --percentbattery 2>/dev/null || echo "")
 536             PERCENT=${${ACPIDATA[(f)1]}[(w)-2]}
 537             ;;
 538         acpi)
 539             PERCENT="${${"$(acpi 2>/dev/null)"}/(#b)[[:space:]]#Battery <->: [^0-9]##, (<->)%*/${match[1]}}"
 540             ;;
 541         *)
 542             PERCENT=""
 543             ;;
 544     esac
 545
 546     if [[ -z "$PERCENT" ]] ; then
 547         PERCENT="No battery or $pr_battery not present "
 548     else
 549         if [[ "$PERCENT" -lt 20 ]] ; then
 550             PERCENT="warning: ${PERCENT}%%"
 551         else
 552             PERCENT="${PERCENT}%%"
 553         fi
 554     fi
 555 }
 556
 557 prompt_ganneff_setup "$@"