bug#23795: 24.5; rx eval on variable gives symbol error

[Brent Goodrick]

Understood. Thanks Andreas.

On Sat, Jun 18, 2016 at 9:19 AM, Andreas Schwab <schwab@linux-m68k.org> wrote:

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.

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Andreas Schwab, schwab@linux-m68k.org
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