2c2
< # match-string.sh: simple string matching
---
> # match-string.sh: Simple string matching.
5c5
< {
---
> { # Exact string match.
7c7
<   NOMATCH=90
---
>   E_NOMATCH=90
9c9
<   BAD_PARAMS=91
---
>   E_BAD_PARAMS=91
11c11
<   [ $# -eq $PARAMS ] || return $BAD_PARAMS
---
>   [ $# -eq $PARAMS ] || return $E_BAD_PARAMS
15c15
<   *   ) return $NOMATCH;;
---
>   *   ) return $E_NOMATCH;;