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-# y_or_n_p.bash
-# Author: Noah Friedman <friedman@prep.ai.mit.edu>
-# Created: 1992-06-18
-# Last modified: 1993-03-01
-# Public domain
-
-# Conversion to bash v2 syntax done by Chet Ramey
-
-# Commentary:
-# Code:
-
-#:docstring y_or_n_p:
-# Usage: y_or_n_p QUERY
-#
-# Print QUERY on stderr, then read stdin for a y-or-n response. Actually,
-# user may type anything they like, but first character must be a `y', `n',
-# `q', or `!', otherwise the question is repeated until such an answer is
-# obtained.
-#
-# If user typed `y', y_or_n_p returns 0.
-#
-# If user typed `n', y_or_n_p returns 1.
-#
-# If user typed `!', y_or_n_p returns 2. This is an indication to the
-# caller that no more queries should be made. Assume `y' for all the rest.
-#
-# If user typed `q', y_or_n_p returns 3. This is an indication to the
-# caller that no more queries should be made. Assume `n' for all the rest.
-#
-#:end docstring:
-
-###;;;autoload
-function y_or_n_p ()
-{
- local ans
-
- [ ! -t 0 ] && return 1
-
- while read -p "$*" -e ans ; do
- case "${ans}" in
- y* | Y* ) return 0 ;;
- n* | N* ) return 1 ;;
- \! ) return 2 ;;
- q* | Q* ) return 3 ;;
- *) echo "Please answer one of \`y', \`n', \`q', or \`"\!"'" 1>&2 ;;
- esac
- done
-}
-
-#:docstring yes_or_no_p:
-# Usage: yes_or_no_p QUERY
-#
-# Like y_or_n_p, but require a full `yes', `no', `yes!', or `quit' response.
-#:end docstring:
-
-###;;;autoload
-function yes_or_no_p ()
-{
- local ans
-
- [ ! -t 0 ] && return 3
-
- while read -p "$*" -e ans; do
- ans="$(echo ${ans} | tr '[A-Z]' '[a-z]')"
-
- case "${ans}" in
- yes ) return 0 ;;
- no ) return 1 ;;
- yes\! ) return 2 ;;
- quit ) return 3 ;;
- *) echo "Please answer \`yes', \`no', \`yes"\!"', or \`quit'" 1>&2 ;;
- esac
- done
-}
-
-provide y_or_n_p
-
-# y_or_n_p.bash ends here