diff options
| -rw-r--r-- | Idea.txt | 4 | ||||
| -rw-r--r-- | incdec | 21 |
2 files changed, 25 insertions, 0 deletions
diff --git a/Idea.txt b/Idea.txt new file mode 100644 index 0000000..5a47f60 --- /dev/null +++ b/Idea.txt @@ -0,0 +1,4 @@ +Readline bindings to increment and decrement a number on the command line, like Vim's <C-a> and <C-x>. + +2021.01.03: +Try C-c and replace the number in a new shell line @@ -0,0 +1,21 @@ +function incdec { + local EX_DATAERR=65 + + # Portion of the line from point to the end of the line. + local line_part="${READLINE_LINE:$READLINE_POINT}" + + # Number to increment. + local number= + + # If the line part doesn't contain a number, exit. + if ! [[ "$line_part" =~ ([0-9]+) ]]; then + return $EX_DATAERR + fi + + number=${BASH_REMATCH[1]} + + echo "$(($number + 1))" +} + +# bind -x '"\C-xa+":incdec' +# bind '"\C-xaa":\C-xa+' |