FMSLogo Code

Fix bug #1910177; WAIT now throws a bad input error when given input in the range <-1,0>, instead of doing nothing.

Add a regression test for bug #1910177; WAIT ignores input <-1,0> -- should throw bad input error

Fix bug #1599122; ZOOM now throws a bad input error when it inputs a non-positive value, instead of silently changing it to 1.

Rename pos_numeric_arg to nonnegative_numeric_arg to better reflect what it actually does. This was done because I need a real pos_numeric_arg to fix a bug in ZOOM and I didn't want to confuse the two functions.

Add a comment.

Fix bug #1518558; Running "5*" now throws a "not enough inputs to *" error, instead of a "* doesn't like [] as input" error.

Add tests for the precedence of operators.

Refactor paren_infix() to make it a little easier to manipulate. Next I'm going to try to replace the recursion with iteration.

Fix bug #1607580; SETACTIVEAREA no longer changes ACTIVEAREA when given bad input.

Add logic to change the focus when pressing TAB and SHIFT+TAB on the commander history.