diff options
Diffstat (limited to 'bin/bre-invert-word')
-rwxr-xr-x | bin/bre-invert-word | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/bin/bre-invert-word b/bin/bre-invert-word new file mode 100755 index 0000000..677ba2e --- /dev/null +++ b/bin/bre-invert-word @@ -0,0 +1,15 @@ +#! /bin/sh +# bre-invert-word : string -> BRE +set -euf + +# TODO escape chars in the resulting BRE. +awk -v input="$1" ' + BEGIN { + split(input,s,"") + for (i in s) { + c=s[i] + printf "\\|%s[^%s]", y, c + y = y c + } + } +' |