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#2166 "-"(a,b) with simp:false prints incorrectly
With simp:true, "-"(a,b) -- internally, ((mminus) a b) -- correctly simplifies to a-b.
But with simp:false, "-"(a,b) prints as -a, not as a-b.
-s
PS There are still some traces of the former n-ary mdifference operator in the code, but it is no longer supported.
Fixed in grind.lisp revision 1.10.2011 for linear display and displa.lisp revision 1.10.2011 for 2D-display. A function msize-mminus and a function dim-mminus has been added for the display of unsimplified mminus-expressions.
Examples:
(%i1) display2d:false$
(%i2) simp:false$
(%i3) "-"(a,b,c,d);
(%o3) a-b-c-d
(%i4) "-"(a,-b,-c,d);
(%o4) a+b+c-d
Closing this bug report as fixed.
Dieter Kaiser