Lucas de Sena ca04f20fec implement a table of atoms defined only once ...

Previously, adding a new atom into the code required:
1. In <icc.h>, add the line `extern Atom my_new_atom;` declaring the new atom.
2. In <icc.c>, add the line `Atom my_new_atom;` defining the new atom.
3. In <icc.c>, add the line `my_new_atom = XInternAtom(dpy, "MY_NEW_ATOM", False);`
   interning this new atom, and assigning the interned value to the variable.

Now, just add a line with the atom's name in the X-MACRO in <icc.h>, and
a XInternAtoms(3) and a set of macros will do the rest.

All new atoms will be referred to as an entry in the ATOMS[] array.
For example:

	ATOMS[MY_NEW_ATOM]

The exception are for those REALLY OLD atoms that have already a
dedicated compile-time-known value defined at <X11/Xatom.h>.  Those
do not need to be interned; and are referred to with a constant
beginning with the `XA_` prefix.  For example:

	XA_WM_CLASS

2026-02-19 20:22:50 +00:00

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