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Move the index terms for the abbreviations to page that describes the things they abbreviate. This saves the user from going to a pointless redirect page when looking up the help for the abbreviation.

Move the index terms for the abbreviations to page that describes the things they abbreviate. This saves the user from going to a pointless redirect page when looking up the help for the abbreviation.

Move the index terms for the abbreviations to page that describes the things they abbreviate. This saves the user from going to a pointless redirect page when looking up the help for the abbreviation.

Add some regression tests for MACROEXPAND.

Add some regression tests for RUNPARSE.

Note that partial support for paren matching has been implemented.

Make CTRL+SHIFT+] select everything between the caret and the matching parenthesis.

Fix bug #2790076; running a procedure that has only empty body lines no longer crashes. This is a variant of a bug that was fixed a long time ago, but it appears as if the fix only works if the procedure is run once. After digging into the code, I think this is because the evaluator assumes that that if is_tree(node) is non-zero, then treepair__tree(node) will be non-NIL. This assumption is violated when a body list consisted of entirely empty lines was treeified. The previous (inadequate) fix was to add some logic to remove this assumption from the evaluator. The new fix is to simply not flag these degenerate functions as being treeified. This causes the evaluator to fail-out, instead of trying to run a procedure with no meaningful body. This seems to work, but all changes to the evaluator are risky and can cause subtle regressions.

Cleanup: Remove unparsed__tree() and tree__line() which were never used and whose definitions were confusing.

Add a regression test for bug #2790076, which is an AV when running a procedure that is created with DEFINE and consists of nothing by empty lines.