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1h
comment Entire PDF document as appendix
It isn't clear what you want. A pdf file is already typeset so line breaking fonts colours etc are fixed you can not include it and inherit the styling of the current docuemnt. Also what is [H] doing?
1h
comment It doesn't hyphenate words ending with “—”
This answer doesn't appear to address the question at all. Adding \hskip as here adds break points before and after the dash.
1h
comment It doesn't hyphenate words ending with “—”
@Manuel context isn't directly relevant other than the fact that it is only used with luatex, it is luatex's hyphenation algorithm that works teh way you want.
1h
comment Big integral sign (different commands)
I'm voting to close this question as off-topic because It is specifically about MathJax which does not use TeX typesetting.
1h
comment Big integral sign (different commands)
as you need a mathjax specific solution the question is off topic for this site, if you click on the mathjax tag link above there are links to better forum for mathjax questions
1h
comment /textwidth error “missing number treated as zero”
use \ not /
2h
comment Removing indention before first table column
and possibly \noindent before the tabular (impossible to tell from the fragment) why have you specified p{13cm} for a fixed parbox of width 23cm when the only thing inside it is \parbox{0.73\textwidth} ?
2h
comment How to align item labels?
@barbarabeeton yes, although I was trying to get the markup half way reasonable before looking at the output. amsthm package can be used to specify fonts and other aspects of the problem environment.
4h
comment Switch between different output versions compiled from the same LaTeX source
pdflatex '\def\zz{yes}\input' mainfile
4h
comment Extra alignment tab has been changed to \cr. <recently read> \endtemplate
this is a duplicate, \setcounter{MaxMatrixCols}{25} (or any number big enough
5h
comment With too many figures, change the page geometry to fit in more figures after the text
Please fix your example so that it runs without error and can be used to test possible answers. Replace \includegraphics[..]{...} by \rule{3cm}{1cm} or whatever size produces an example that demonstrates the problem and can be reproduced locally.
5h
comment Macro spacing mystery
It is usually best not to have a space before or after \hspace, looking at the source you might think there was .2cm of white space but there s \hspace{.2cm} R produces one inter-word space, .2cm space and one more inter-word space.
5h
comment Macro spacing mystery
This is a FAQ and must be a duplicate. the space character after \whatever is absorbed as the terminator for the macro name so does not make a token. the space character after } does make a token so produces a word space in addition to the stated space of .2cm.
5h
comment Colorful prebreak and postbreak tokens with listings package
@Jubobs because if you don't You get an error message from tex telling you to do it:-) Remove the \hbox and you get ! Improper discretionary list. which is a primitive error in a \discretionary texbook says: more precisely, the horizontal list formed by each discretionary general text must consist only of characters, ligatures, kerns, boxes, and rules; there should be no glue or penalty items, etc
6h
comment How to align item labels?
don't number things by hand using latex and don't use ~\\ to force white space (you should never use \\ at the end of a paragraph) similarly problem 1 is clearly a heading so should be marked as such (and automatically numbered) not numbered by hand with an explicit font change.
6h
comment \xpatchcmd defines macros when applied to undefined commands
It would please me greatly to blame the author of xpatch:-)
6h
comment \xpatchcmd defines macros when applied to undefined commands
This is the expected behaviour unless a package does something to avoid it, you see the same from the latex test \@ifundefined{zzz} which similarly defines \zzz to \relax (as that is the behaviour of the \csname primitive, to define undefined csnames to relax)
17h
comment TeX expert needed: how to \setto(optimal)width?
@cfr i can probably survive without the rep:-) Vincent, to close the loop you should accept your own answer.
18h
comment TeX expert needed: how to \setto(optimal)width?
I think you are describing the varwidth environment from the package of that name
21h
comment LaTeX “Variables” - \@varname
question's a bit vague to answer but note \def is just the primitive underlying \newcommand so there is no difference in the type of construct defined \degree and \@degree are both just control sequences referring to macros defined in your document, the @ is just a letter in this context, it does not denote a "variable". You could use \newcommand{\degree}[1]{\newcommand\@degree{#1}} or \def\degree#1{\def\@degree{#1}}