Follow-up Comment #10, bug #66438 (group groff):
> To quote the brackets the shell command needs to see. Thank you for clearing that up to me! I did not think about the m4 context, _and_ I did not think of `[`and `]` being m4's quote characters. > I don't remember if POSIX character classes are valid in BREs, Yes, [1] (logical) page 102, section "7.3.5 Bracket Expression", Item 6. lists them as BREs. > But this intsance is still an Autoconf macro definition, so then, I suspect, > the brackets would have to be tripled. I see that now. Would be very unreadable, probably. I find m4's choice of quotation syntax... surprising? Unusual? I don't know, anyway, I have deep respect, so do not want to judge here. [1] https://pubs.opengroup.org/onlinepubs/009656599/toc.pdf _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?66438> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/
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