Display the non-matching regex in “No match” error message

[Artyom Bologov]

Hi y’all,

It would be useful if ed displayed which exactly regex did not match,
and against what. So, instead of

script, line 359: No match

we get

script, line 359: No match of "" against /^[ ]\{2\}[eo][nt][dh]\(er.*\)*$/

What do you think?

Best of luck,
-- 
Artyom Bologov
https://aartaka.me