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|
#!/bin/sh
# shellcheck disable=SC2059
# We don't depend on gettext-bin, so provide a LANG=C-equivalent shim
# see #728612
command -v gettext > /dev/null || alias gettext='printf %s'
# EASIEST editor's basename
EASIEST="nano"
# Ensure that $HOME/.selected_editor is writeable
true >> ~/.selected_editor || exit 1
# The query output is shaped like
# Name: editor
# Link: /usr/bin/editor
# Slaves:
# editor.1.gz /usr/share/man/man1/editor.1.gz
# Status: manual
# Best: /usr/bin/vim.nox
# Value: /usr/bin/vim.nox
#
# Alternative: /bin/ed
# Priority: -100
# Slaves:
# editor.1.gz /usr/share/man/man1/ed.1.gz
#
# Alternative: /usr/bin/vim.nox
# Priority: 40
# Slaves:
# editor.1.gz /usr/share/man/man1/vim.1.gz
# we care about getting {Alternative}s sorted by {Priority}, in this case
# /usr/bin/vim.nox
# /bin/ed
sorted_list_of_editors="$(
alternative=
priority=
update-alternatives --query editor | while read -r field value; do
case "$field" in
'Alternative:') alternative="$value" ;;
'Priority:') priority="$value" ;;
esac
if [ -n "$alternative" ] && [ -n "$priority" ]; then
printf '%s\t%s\n' "$priority" "$alternative"
alternative=
priority=
fi
done | sort -n -r | cut -f 2-
)"
IFS='
'
editor_count="$(update-alternatives --list editor | wc -l)"
if [ "$editor_count" -gt 1 ]; then
TEXTDOMAIN=sensible-utils gettext 'Select an editor. To change later, run select-editor again.
'
# shellcheck source=/dev/null
[ -r ~/.selected_editor ] && . ~/.selected_editor # Highlight the current selection with a *
easiest=1 # If EASIEST not found, default to the best alternative
default=
i=0
for e in $sorted_list_of_editors; do
i=$(( i + 1 ))
[ "$e" = "$SELECTED_EDITOR" ] && { ind='*'; default=$i; } || ind=' '
if [ "${e##*/}" = "$EASIEST" ]; then
# %c=* for the currently-selected entry, space for others
printf "$(TEXTDOMAIN=sensible-utils gettext '%c %*u. %s <---- easiest\n')" "$ind" "${#editor_count}" $i "$e"
easiest=$i
else
printf "$(TEXTDOMAIN=sensible-utils gettext '%c %*u. %s\n')" "$ind" "${#editor_count}" $i "$e"
fi
done
echo
default="${default:-"$easiest"}"
selected=x
while :; do
if [ -z "$selected" ]; then
selected="$default"
elif ! { [ "$selected" -gt 0 ] && [ "$selected" -le $i ]; } 2>/dev/null; then
printf "$(TEXTDOMAIN=sensible-utils gettext 'Choose 1-%u [%u]: ')" $i "$default"
read -r selected
else
break
fi
done
i=0
for e in $sorted_list_of_editors; do
i=$(( i + 1 ))
if [ $i -eq "$selected" ]; then
printf '%s\n' "# Generated by $0" "SELECTED_EDITOR=\"$e\"" > ~/.selected_editor && exit 0
fi
done
fi
exit 1
|
