Hi all,
please consider the following 2 examples and how they are filled: First
example works as expected, second one not because of \&:
--8<---------------cut here---------------start------------->8---
\documentclass{article}
\usepackage{longtable}
\begin{document}
Hit `C-c C-q C-e' inside env:
\begin{tabular}{ll}
These lines will & appear \\
at the end
& of the table
\end{tabular}
results in:
\begin{tabular}{ll}
These lines will & appear \\
at the end
& of the table
\end{tabular}
Hit `C-c C-q C-e' inside env:
\begin{tabular}{ll}
These lines will appear \&
at the end \\
of the &
table
\end{tabular}
results in:
\begin{tabular}{ll}
These lines will appear \&
at the end \\
of the &
table
\end{tabular}
\end{document}
--8<---------------cut here---------------end--------------->8---
AUCTeX doesn't see the control symbol \&, it just takes the ampersand as
a column separator. This issue is caused in the last part of the
function `LaTeX-indent-tabular':
--8<---------------cut here---------------start------------->8---
(cond (...
(t
(+ 2
(let ((any-col (save-excursion
(when (re-search-backward "\\\\\\\\\\|&" beg-pos
t)
(current-column)))))
(if (and any-col (string= "&" (match-string 0)))
any-col
beg-col)))))))
--8<---------------cut here---------------end--------------->8---
I'm not aware of any way to fix this *only* by tweaking the regexp here:
(re-search-backward "\\\\\\\\\\|&" beg-pos t)
Any idea?
Otherwise, I suggest the following change in `LaTeX-indent-tabular':
--8<---------------cut here---------------start------------->8---
(cond (...
(t
(+ 2
(let ((any-col (save-excursion
(when (re-search-backward "\\\\\\\\\\|[^\\]&"
beg-pos t)
(current-column)))))
(if (and any-col (string= "&" (substring
(match-string-no-properties 0) -1)))
(1+ any-col)
beg-col)))))))
--8<---------------cut here---------------end--------------->8---
Comments welcome.
Best, Arash
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