as_latex_escaped: two small issues

[rauschma]

First of all: I’m delighted that as_latex_escaped() exists! Not many libraries support LaTeX.

I have encountered two minor issues:

• The last two components of RGB colors are flipped, i.e. the numbers in \textcolor[RGB]{38,210,139} should appear in this order: 38,139,210
• A backslash should be escaped as \textbackslash{}, not as a double-backslash \\ (which is a line break in LaTeX).

Fix

• This is a Gist with a fix and unit tests: https://gist.github.com/rauschma/f36aabe3ac21e8a54a9a54e872d29198
• I couldn’t use your LATEX_REPLACE approach because sequential replacing doesn’t work anymore (\textbackslash{} contains braces and the replacement for braces contain a backslash).

Escaping

In general, I’m escaping as following in LaTeX:

HashMap::from([
    (r"#", r"\#"),
    (r"$", r"\$"),
    (r"%", r"\%"),
    (r"&", r"\&"),
    (r"~", r"\textasciitilde{}"),
    (r"_", r"\_"),
    (r"^", r"\textasciicircum{}"),
    (r"\", r"\textbackslash{}"),
    (r"{", r"\{"),
    (r"}", r"\}"),
])

Due due commandchars=\\\{\}, only these entries are needed inside Verbatim:

HashMap::from([
    (r"\", r"\textbackslash{}"),
    (r"{", r"\{"),
    (r"}", r"\}"),
])