TikZ trims spaces from named points only sometimes

[PhelypeOleinik]

From this TeX.SX thread: https://tex.stackexchange.com/q/508391/134574
TikZ trims spaces around node names, but only sometimes. Apparently when the node name is followed by a ) the space is not removed:

\input tikz
\tikz{
  \coordinate (A) at (0,0);
  \coordinate (B) at (1,1);
  \draw ( A ) -- (B);
  %        ^ No shape named 'A ' is known;
  \draw ( A -| B ) -- (B-|A);
  %             ^ No shape named 'B ' is known;
}
\bye

But leading spaces apparently are always removed.

I would say TikZ should always trim the spaces around the node name.

One could argue that this can break existing code which relies on this feature, but relying on trailing spaces is weird, I think :-)

If not, then perhaps the error message could be changed to add quotes around the node name so that the trailing space is more easily seen (suggested here: https://tex.stackexchange.com/q/389388/134574).

[hmenke]

One could argue that this can break existing code which relies on this feature, but relying on trailing spaces is weird, I think :-)

That is the reason why I will probably not fix this in the core. I'm already breaking too much stuff. However, I could provide a fix as a library.

[hmenke]

I've implemented the suggestions with the quotes but I will not change the core behaviour. I'm thus marking it as fixed.