From: Andreas Schwab <schwab@linux-m68k.org>
To: bgoodr@gmail.com
Cc: 23795-done@debbugs.gnu.org
Subject: bug#23795: 24.5; rx eval on variable gives symbol error
Date: Sat, 18 Jun 2016 18:19:03 +0200 [thread overview]
Message-ID: <87lh228o7c.fsf@linux-m68k.org> (raw)
In-Reply-To: <22373.28050.673856.847792@gargle.gargle.HOWL> (bgoodr@gmail.com's message of "Sat, 18 Jun 2016 08:49:38 -0700")
bgoodr@gmail.com writes:
> Insert this into a .el file and load it in using emacs -Q:
>
> (let ((page-name "the page"))
> (let ((regexp
> ;; (concat "[[" page-name "]]")
> (rx "[[" (eval page-name) "]]" )))
> regexp
> ))
Since rx is a macro it cannot refer to runtime values. You need to use
rx-to-string to construct the regexp at run time. Or just use concat as
in the comment.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2016-06-18 16:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-18 15:49 bug#23795: 24.5; rx eval on variable gives symbol error bgoodr
2016-06-18 16:13 ` Noam Postavsky
2016-06-18 16:15 ` Brent Goodrick
2016-06-18 16:19 ` Andreas Schwab [this message]
2016-06-18 16:21 ` Brent Goodrick
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