examples/scripts.noah/stty.bash

   1 # stty.bash
   2 # Author: Noah Friedman <friedman@prep.ai.mit.edu>
   3 # Created: 1992-01-11
   4 # Last modified: 1993-09-29
   5 # Public domain
   6
   7 # Conversion to bash v2 syntax done by Chet Ramey
   8
   9 # Commentary:
  10 # Code:
  11
  12 require remap_keybindings
  13
  14 #:docstring stty:
  15 # Track changes to certain keybindings with stty, and make those changes
  16 # reflect in bash's readline bindings as well.
  17 #
  18 # This requires bash version 1.10 or newer, since previous versions did not
  19 # implement the `bind' builtin.
  20 #:end docstring:
  21
  22 ###;;;autoload
  23 function stty ()
  24 {
  25     local erase="backward-delete-char"
  26     local kill="unix-line-discard"
  27     local werase="backward-kill-word"
  28     local lnext="quoted-insert"
  29     local readline_function=""
  30     local key=""
  31     local stty_command=""
  32
  33     while [ $# -gt 0 ]; do
  34        case "$1" in
  35           erase | kill | werase | lnext )
  36              key=$(echo "${2}" | cat -v | sed 's/\^/\\C-/')
  37              readline_function=$(eval echo \$${1})
  38
  39              # Get rid of any current bindings; the whole point of this
  40              # function is to make the distinction between readline
  41              # bindings and particular cbreak characters transparent; old
  42              # readline keybindings shouldn't hang around.
  43              # could use bind -r here instead of binding to self-insert
  44              remap_keybindings "${readline_function}" "self-insert"
  45
  46              # Bind new key to appropriate readline function
  47              bind "\"${key}\": ${readline_function}"
  48
  49              stty_command="${stty_command} ${1} ${2}"
  50              shift 2
  51             ;;
  52           *)
  53              stty_command="${stty_command} ${1}"
  54              shift
  55             ;;
  56        esac
  57     done
  58
  59     command stty ${stty_command}
  60 }
  61
  62 provide stty
  63
  64 # stty.bash ends here