23.0.50; calc: units conversion changes value

[Torsten Bronger]

Hallöchen!

In Emacs Calc, when I try to convert between incompatible units,
Calc refuses to convert, which is totally correct behaviour.
However, in some cases it changes the value of the quantity, which
isn't in my opinion:

Current value on stack: "1".  Then "calc-convert-units", Old units:
1, new units: cm^2.  The new value on the stack is "100" but I
expect "1".  This is problematic when you mis-typed the new unit and
try it again with the correct one.  Then you get indeed the correct
target unit but (if metric prefixes and at least ^2 is involved)
with the wrong value.

Tschö,
Torsten.

-- 
Torsten Bronger, aquisgrana, europa vetus
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