File: h.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2020-2025 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the “Software”), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # h [options...] [name...]
  27 #
  28 # Help is a tool to show manual pages while keeping the output narrow, in case
  29 # the terminal window/tab is wide when run.
  30 #
  31 # The help option is `-h`, `--h`, `-help`, or `--help`.
  32 
  33 
  34 case "$1" in
  35     -h|--h|-help|--help)
  36         awk '/^# +h /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  37         exit 0
  38     ;;
  39 esac
  40 
  41 if [ $# -eq 0 ]; then
  42     awk '/^# +h /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  43     exit 0
  44 fi
  45 
  46 width="$(tput cols)"
  47 if [ "${width}" -gt 100 ]; then
  48     width="$((width / 2 - 1))"
  49 fi
  50 MANWIDTH="${width}" man "$@"