pgfutil-plain.def has dulicate def'n of \pgfmath@tempdima

[mwette]

Brief outline of the bug

I'm using texlive on Ubuntu. The distribution id is 2024.20240706. In the file pgfutil-plain.def, near line 230, I happened to see the following code. I'm guessing the second line is an unintentional duplicate. Maybe intention was to define dimb ?

\let\pgfmath@tempdima\pgfutil@tempdima
\let\pgfmath@tempdima\pgfutil@tempdima
\let\pgfmath@tempcnta\pgfutil@tempcnta
\let\pgfmath@tempcntb\pgfutil@tempcntb

Minimal working example (MWE)

N/A

[muzimuzhi]

Each of the format drivers pgfutil-plain.def, pgfutil-latex.def, and pgfutil-context.def contains the same issue, which was introduced by 6b8752d (fixed math loading order problem, 2012-03-30).

Relevant lines in format drivers

pgf/tex/generic/pgf/utilities/pgfutil-plain.def

Lines 230 to 233 in cf50fa4

	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempcnta\pgfutil@tempcnta
	\let\pgfmath@tempcntb\pgfutil@tempcntb

pgf/tex/generic/pgf/utilities/pgfutil-context.def

Lines 219 to 222 in cf50fa4

	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempcnta\pgfutil@tempcnta
	\let\pgfmath@tempcntb\pgfutil@tempcntb

pgf/tex/generic/pgf/utilities/pgfutil-latex.def

Lines 86 to 89 in cf50fa4

	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempcnta\pgfutil@tempcnta
	\let\pgfmath@tempcntb\pgfutil@tempcntb

Nowadays I doubt whether all the four \let\pgfmath@temp...\pgfutil@temp... in format drivers are necessary or not.

In pgfmath, these four temp registers are created in pgfmathutil.code.tex,

pgf/tex/generic/pgf/math/pgfmathutil.code.tex

Lines 106 to 115 in cf50fa4

	\let\pgfmath@tempdima\pgfutil@tempdima
	\let\pgfmath@tempdimb\pgfutil@tempdimb
	\let\c@pgfmath@counta\c@pgf@counta
	\let\c@pgfmath@countb\c@pgf@countb
	\let\c@pgfmath@countc\c@pgf@countc
	\let\c@pgfmath@countd\c@pgf@countd
	\let\pgfmath@tempcnta\pgfutil@tempcnta
	\let\pgfmath@tempcntb\pgfutil@tempcntb

which is always loaded after format driver, even when pgfmath is used on its own.