forked from mirrors/org-mode
org-element: Fix $...$ parser error
* lisp/org-element.el (org-element-latex-fragment-parser): Also check border character right after opening "$" sign. * testing/lisp/test-org-element.el (test-org-element/latex-fragment-parser): Add tests. Reported-by: thomas <thomas@friendlyvillagers.com> <http://permalink.gmane.org/gmane.emacs.orgmode/114285>
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@ -2983,16 +2983,8 @@ Assume point is at the beginning of the LaTeX fragment."
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(save-excursion
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(let* ((begin (point))
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(after-fragment
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(if (eq (char-after) ?$)
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(if (eq (char-after (1+ (point))) ?$)
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(search-forward "$$" nil t 2)
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(and (not (eq (char-before) ?$))
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(search-forward "$" nil t 2)
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(not (memq (char-before (match-beginning 0))
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'(?\s ?\t ?\n ?, ?.)))
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(looking-at-p
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"\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|'\\|$\\)")
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(point)))
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(cond
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((not (eq ?$ (char-after)))
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(pcase (char-after (1+ (point)))
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(?\( (search-forward "\\)" nil t))
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(?\[ (search-forward "\\]" nil t))
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@ -3000,10 +2992,23 @@ Assume point is at the beginning of the LaTeX fragment."
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;; Macro.
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(and (looking-at "\\\\[a-zA-Z]+\\*?\\(\\(\\[[^][\n{}]*\\]\\)\
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\\|\\({[^{}\n]*}\\)\\)*")
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(match-end 0))))))
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(post-blank (if (not after-fragment) (throw 'no-object nil)
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(goto-char after-fragment)
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(skip-chars-forward " \t")))
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(match-end 0)))))
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((eq ?$ (char-after (1+ (point))))
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(search-forward "$$" nil t 2))
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(t
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(and (not (eq ?$ (char-before)))
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(not (memq (char-after (1+ (point)))
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'(?\s ?\t ?\n ?, ?. ?\;)))
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(search-forward "$" nil t 2)
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(not (memq (char-before (match-beginning 0))
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'(?\s ?\t ?\n ?, ?.)))
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(looking-at-p
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"\\(\\s.\\|\\s-\\|\\s(\\|\\s)\\|\\s\"\\|'\\|$\\)")
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(point)))))
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(post-blank
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(if (not after-fragment) (throw 'no-object nil)
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(goto-char after-fragment)
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(skip-chars-forward " \t")))
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(end (point)))
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(list 'latex-fragment
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(list :value (buffer-substring-no-properties begin after-fragment)
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@ -1551,10 +1551,16 @@ e^{i\\pi}+1=0
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(ert-deftest test-org-element/latex-fragment-parser ()
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"Test `latex-fragment' parser."
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;; Basic $...$ test.
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(should
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(eq 'latex-fragment
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(org-test-with-temp-text "$a$"
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(org-element-type (org-element-context)))))
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;; Test valid characters after $...$ construct.
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$a$a"
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(org-element-type (org-element-context)))))
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(should
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(eq 'latex-fragment
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(org-test-with-temp-text "$a$!"
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@ -1579,18 +1585,46 @@ e^{i\\pi}+1=0
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(eq 'latex-fragment
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(org-test-with-temp-text "$a$'"
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(org-element-type (org-element-context)))))
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;; Test forbidden characters inside $...$.
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$a$a"
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(org-test-with-temp-text "$.a$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$,a$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$;a$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$ a$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$a.$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$a,$"
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(org-element-type (org-element-context)))))
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(should-not
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(eq 'latex-fragment
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(org-test-with-temp-text "$a $"
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(org-element-type (org-element-context)))))
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;; Test $$...$$.
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(should
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(eq 'latex-fragment
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(org-test-with-temp-text "$$a$$"
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(org-element-type (org-element-context)))))
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;; Test \(...\).
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(should
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(eq 'latex-fragment
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(org-test-with-temp-text "\\(a\\)"
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(org-element-type (org-element-context)))))
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;; Test \[...\].
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(should
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(eq 'latex-fragment
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(org-test-with-temp-text "\\[a\\]"
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