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bug#20806: 25.0.50; `string-match' is confused???
From: |
Michael Heerdegen |
Subject: |
bug#20806: 25.0.50; `string-match' is confused??? |
Date: |
Sun, 14 Jun 2015 00:58:23 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
Vaidheeswaran C <vaidheeswaran.chinnaraju@gmail.com> writes:
> Debugger entered--Lisp error: (error "Regexp cannot match an empty
> string")
> signal(error ("Regexp cannot match an empty string"))
> error("Regexp cannot match an empty string")
> [...]
> command-execute(highlight-regexp)
AFAICT, you got this error because you entered an regexp to the
`highlight-regexp' prompt that the empty string is matched by. Such a
regexp is rejected by hi-lock. With other words, the error is raised by
intent in hi-lock.el.
I guess, theoretically this rejected case could be made working, but the
code would get a bit uglier and less effective then, and is easy to
avoid.
What's your use case?
Michael.