font-lock fails with \to in a macro

font-lock fails with \to in a macro

[Eric S Fraga]

Hello,

I have the following macro to aid in presenting calculations in
solutions to coursework questions etc. for my teaching:

#+macro: calculate src_calc[:exports code]{$1} = @@latex:\fbox{@@ src_emacs-lisp{(setq var-$2 (string-to-number (calc-eval "evalv($1)")))} \to $2 @@latex:}\\@@

The "\to" which org catches and converts to → on export causes a problem
with font-locking:

Error during redisplay: (jit-lock-function 1) signaled (wrong-type-argument vectorp →)

Using math mode directly, i.e. \(\to\) works just fine, at least for
LaTeX export, but I thought I'd mention this anomaly in case it bites
anybody else!

thanks,
eric


-- 
: Eric S Fraga (0xFFFCF67D), Emacs 25.0.92.1, Org release_8.3.4-705-g716e33

Re: font-lock fails with \to in a macro

[Nicolas Goaziou]

Hello,

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> I have the following macro to aid in presenting calculations in
> solutions to coursework questions etc. for my teaching:
>
> #+macro: calculate src_calc[:exports code]{$1} = @@latex:\fbox{@@ src_emacs-lisp{(setq var-$2 (string-to-number (calc-eval "evalv($1)")))} \to $2 @@latex:}\\@@
>
> The "\to" which org catches and converts to → on export causes a problem
> with font-locking:
>
> Error during redisplay: (jit-lock-function 1) signaled (wrong-type-argument vectorp →)
>
> Using math mode directly, i.e. \(\to\) works just fine, at least for
> LaTeX export, but I thought I'd mention this anomaly in case it bites
> anybody else!

FWIW, I cannot reproduce it.

Regards,

-- 
Nicolas Goaziou

Re: font-lock fails with \to in a macro

[Eric S Fraga]

On Wednesday,  6 Apr 2016 at 14:46, Nicolas Goaziou wrote:
> FWIW, I cannot reproduce it.

Ignore.  Probably due to the same issue discussed elsewhere: my
modification of org-emphasis-alist... <deeper blush>

thanks!
-- 
: Eric S Fraga (0xFFFCF67D), Emacs 25.0.92.1, Org release_8.3.4-705-g716e33