chickadee » semantic-version » version-pred

version-pred VER #!optional IDX AMTprocedure

Return copy of VER with the target element at or before IDX replaced by the AMT predecessor.

VER
semantic-version ; version to adjust.
IDX
fixnum ; which element to adjust, default is (sub1 (version-depth VER)).
AMT
fixnum ; amount to adjust, default is 1.

Only integer elements may be targets. See Notes..