Questions tagged [whatsit]

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7 votes
1 answer

\write or \index at the beginning of a table cell adds spurious vertical space

If a tabular column of type p (or a few others such as tabularx's X) starts with a write (for example because it starts with \index), this inserts some vertical space. MWE: \documentclass{article} %\...
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17 votes
3 answers

Why do user-defined whatsit nodes affect LuaTeX pagebreaking?

EDIT: A summary of the possible answers is given below. In my current LuaTeX project I am using user-defined whatsit nodes to transfer information between the different stages of a LuaTeX run. On ...
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10 votes
2 answers

Is it possible to remove (or otherwise nullify) a whatsit node from a box?

I am aware that it is not generally possible to modify the contents of a box (as per, though I believe it is sometimes possible to "unbox" material and ...
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25 votes
3 answers

Whatsits: when are they used in practice?

This question came up in discussions surrounding the question How to replace a large block of text by an empty block of the same size?, which basically asks for a vmode analog of \phantom. My question ...
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18 votes
1 answer

\addtocontents at end of document not getting written to .toc file?

I'm trying to find a more elegant solution for ToC, LoT, and LoF formatting for my university's thesis/dissertation style. The short form of their requirements means I need one page style for the ...
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