Questions tagged [robust-commands]

I was reading in latex2e about the use of \protect. In section 13.8 it mentions "expressions in tabular and array enviornments" as examples of moving arguments. I was a bit surprised by this. Could someone clarify what's meant here? Or, why…

The command \@ifnextchar cannot be used in a \section and the like. It fails with a "TeX capacity exceeded" message. This is pretty clearly related to the recycling of the section name for the table of contents and/or page marks, as shown by the…