I believe I have found a bug in LaTeX-current-environment which reads:
(defun LaTeX-current-environment (&optional arg)
(setq arg (if arg (if (< arg 1) 1 arg) 1))
(let* ((in-comment (TeX-in-commented-line))
(comment-prefix (and in-comment (TeX-comment-prefix))))
(save-excursion
(while (and (/= arg 0)
(re-search-backward
"\\\\\\(begin\\|end\\) *{ *\\([A-Za-z*]+\\) *}" nil t))
(when (or [omitted]
(and (not LaTeX-syntactic-comments)
*here* -> (not (TeX-in-commented-line))))
(setq arg (if (string= (match-string 1) "end") (1+ arg) (1-
arg)))))
(if (/= arg 0)
"document"
(match-string-no-properties 2)))))
The problem is that when LaTeX-syntactic-comments is nil
(TeX-in-commented-line) only recognizes comment-only lines as comments.
Its seems that one should really just check to see the point is inside a
comment, even if there are noncomment code on the
same line. For example, when the function encounters the LaTeX code
b %&= \begin{bmatrix}
% 1 \\ 2
% \end{bmatrix}
&= (1,2)
it ignores the "\end{bmatrix}" because the comment is on a line by
itself but counts the "\begin{bmatrix}" and everything is screwed up
from that point on.
Best regards,
Gerard
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