Using square bracket inside square bracket

Question

I have a two-column layout, and I want to put a specific section with images to span the whole page width. So I use:

\twocolumn[
...
]

So far, so good. However, when I want to include anything in this block that also includes a square bracket ], then this fails (variety of errors depending on what goes on inside the brackets). How should I go around this?

Example error:

\twocolumn[
  \includegraphics[width=15cm]{abc.jpg}
]

see http://tex.stackexchange.com/questions/84595/latex-optional-arguments-with-square-brackets, http://tex.stackexchange.com/questions/99495/inside-an-optional-argument, http://tex.stackexchange.com/questions/78414/bug-latex-misparses-nested-optional-arguments and possibly more... the most complete answer being http://tex.stackexchange.com/a/99514/5049 — cgnieder, Apr 16 '13 at 19:28

score 11 · Accepted Answer · edited Apr 16 '13 at 19:49

11

\twocolumn[
 {\includegraphics[width=15cm]{abc.jpg}}
]

(Grouping {} added).

edited Apr 16 '13 at 19:49

barbara beeton

88,848

answered Apr 16 '13 at 19:24

Przemysław Scherwentke

37,268

Using square bracket inside square bracket

1 Answers1