I have just been told that my question is an "XY Problem". What does that mean? What am I supposed to do?
XY Problem means: You want to do X. You think about a solution Y. But you find out that there is a problem with this solution Y, so you ask about Y, not even mentioning X.
You should ask about your real problem X, and as a part of the question put: "I tried Y but with no success / with some problems." Find out more about XY problem (link).
Few examples how you should / should not ask:
\hspace does not work at the beginning of line. The poster was writing a call stack and needed each line to be indented by varying amount of space. Much better would be to ask I need to write a call stack with indented lines.
Redefining \verb to be \url The poster asked about changing some LaTeX commands. After a short discussion, it was found that his real issue is that the
\verbcommand gets nice highlight in Emacs and he wanted
\urlto be highlighted the same way. The correct question would state something like How to get Emacs properly highlight \url.
How to correctly replace $$..$$ with \[..\] and $..$ with \(..\)? The posters asked about a regular expression for LuaTeX to replace the plain math modes with their LaTeX counterparts. After a thread of about ten comments, the poster reveals that the objective is to wrap math mode material into
/ActualTextand the original intention was to achieve this by hooking into the
\[...\]macros. However, the problem is solved much easier using the LuaTeX
mlist_to_hlistcallback. The correct question would have been How to wrap math mode material into /ActualText?