I just came to the following problem - using \settowidth on a length in a tikzpicture resets that length to 0? Here is a (totally command-line) MWE, compiled with pdflatex test.tex: ...
It often frustrates me that TeX only supplies a small set of bracket sizes to choose from (or rather, the default fonts do.) Has anybody written a package that provides continuously-sizable brackets, ...
It seems that the tikzpicture environment always leaves vertical mode, even when the overlay option is given (and thus the picture doesn't actually take any space). This can cause unexpected ...