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function __readline_incdec {
local increment_by="$1"
local backward="$2"
line=$(perl -s -e '
sub incdec {
my ($line, $increment_by, $point_position, $is_backward) = @_;
$point_position ||= 0;
$is_backward ||= 0;
my $start_position = 0;
my $previous_match_start = 0;
while ($line =~ /(-?\d+)/g) {
if ($is_backward) {
# Set start position to the current match start. This gives us the
# correct start position when incrementing the last number in a
# line.
$start_position = $-[0];
# If point is not at the end, set start position to the number
# closest to the point position.
if ($point_position < $-[0]) {
$start_position = $previous_match_start;
last;
}
$previous_match_start = $-[0];
}
else {
if ($point_position < $+[0]) {
$start_position = $-[0];
last;
}
}
}
pos($line) = $start_position;
$line =~ s/\G([^-\d]*)(-?\d+)/$1 . ($2 + $increment_by)/e;
return $line;
}
my $output = incdec($line, $increment_by, $point_position, $backward);
print $output;
' \
-- \
-line="$READLINE_LINE" \
-increment_by="$increment_by" \
-point_position="$READLINE_POINT" \
-backward="$backward"
)
READLINE_LINE="$line"
}
function __readline_incdec_increment {
local old_line_length="${#READLINE_LINE}"
__readline_incdec 1 1
local new_line_length="${#READLINE_LINE}"
if [ "$old_line_length" -gt "$new_line_length" ]; then
READLINE_POINT="$(($READLINE_POINT - 1))"
fi
}
function __readline_incdec_decrement {
local old_line_length="${#READLINE_LINE}"
__readline_incdec -1 1
local new_line_length="${#READLINE_LINE}"
if [ "$old_line_length" -lt "$new_line_length" ]; then
READLINE_POINT="$(($READLINE_POINT + 1))"
fi
}
bind -x '"\C-x-": __readline_incdec_decrement'
bind -x '"\C-x+": __readline_incdec_increment'
|
