I see! I also haven't seen [a-Z] before, anywhere, I think. Thanks for the explanation!
On 11.06.20 21:09, to...@tuxteam.de wrote: > On Thu, Jun 11, 2020 at 08:59:35PM +0200, Zelphir Kaltstahl wrote: >> Hi Guile users! >> >> I was about to follow the guile-hall tutorial posted on the list today, >> but unfortunately, I get an error the first time I need to input a >> guile-hall command: > [...] > >> In unknown file: >> 0 (make-regexp "^-[a-Z]*h[a-Z]*$|^--help$") >> ERROR: In procedure make-regexp: >> In procedure make-regexp: Invalid range end > I think Guile relies on the system lib for regexps. Not all take [a-Z] as > a valid range (FWIW my plain "grep" on some Debian GNU/Linux complains > also about an "invalid range end". > > I think the longer version [A-Za-z] is safer. > > Cheers > -- t
