[Bug-XBoard] [bug #19851] Enhance file position index switches for loading last item in file

[anonymous]

Follow-up Comment #1, bug #19851 (project xboard):

Do we really want this? There has been a more elaborate (and
upward-compatible) proposal to use negative numbers for counting from the end
(i.e. -1 would be the fore-last game, etc.). But this is incompatible with the
patch that I implemented in the mean time to use index values -1 and -2 to
indicate auto-increment of the index during a match, starting at 1 (per game
or per two games, respectively). The value 0 is still available, though, and
currently used synonymously for 1.

We should either decide that this is not worth having, and close the issue,
or quickly implement it. I for myself have doubts that this is worth having.

H.G. Muller

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