Re: [O] [PATCH] better parsing of latex fragments

[Nicolas Goaziou]

Hello,

Florian Beck f...@fbeck.net writes:

 this patch allows, once again, latex fragments inside parentheses and
 also fragments like $\left(\frac12\right.$

AFAIR, this syntax wasn't valid before. This limitation is due to the
fact that $ is also a currency.

In doubt, use \(...\).


Regards,

-- 
Nicolas Goaziou

[O] [PATCH] better parsing of latex fragments

[Florian Beck]

Hi,

this patch allows, once again, latex fragments inside parentheses and
also fragments like $\left(\frac12\right.$
-- 
Florian Beck
From 3ef8041c8dd8acbdf810f72feb8e9e104545badb Mon Sep 17 00:00:00 2001
From: Florian Beck f...@miszellen.de
Date: Sun, 13 Jul 2014 14:59:24 +0200
Subject: [PATCH] Allow latex fragments inside parentheses and those ending with
 punctuation.

* lisp/org-element.el:
(org-element-latex-fragment-parser): more lenient regexps
*
  testing/lisp/test-org-element.el (test-org-element/latex-fragment-parser): add tests
---
 lisp/org-element.el  | 4 ++--
 testing/lisp/test-org-element.el | 8 
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lisp/org-element.el b/lisp/org-element.el
index 7aa8208..7d10d61 100644
--- a/lisp/org-element.el
+++ b/lisp/org-element.el
@@ -2918,8 +2918,8 @@ Assume point is at the beginning of the LaTeX fragment.
 		(and (not (eq (char-before) ?$))
 			 (search-forward $ nil t 2)
 			 (not (memq (char-before (match-beginning 0))
-'(?\s ?\t ?\n ?, ?.)))
-			 (looking-at \\([- \t.,?;:'\]\\|$\\))
+'(?\s ?\t ?\n)))
+			 (looking-at \\([[:space:][:punct:]]\\|$\\))
 			 (point)))
 		(case (char-after (1+ (point)))
 		  (?\( (search-forward \\) nil t))
diff --git a/testing/lisp/test-org-element.el b/testing/lisp/test-org-element.el
index b2b0c52..788f13b 100644
--- a/testing/lisp/test-org-element.el
+++ b/testing/lisp/test-org-element.el
@@ -1337,6 +1337,14 @@ e^{i\\pi}+1=0
(org-test-with-temp-text \\[a\\]
  (org-element-map
 	 (org-element-parse-buffer) 'latex-fragment 'identity)))
+  (should
+   (org-test-with-temp-text ($a$)
+ (org-element-map
+	 (org-element-parse-buffer) 'latex-fragment 'identity)))
+  (should
+   (org-test-with-temp-text $\\left(a\right.$
+ (org-element-map
+	 (org-element-parse-buffer) 'latex-fragment 'identity)))
   ;; Test fragment at the beginning of an item.
   (should
(eq 'latex-fragment
-- 
1.9.1