FMSLogo Code

Fix an inconsistency in the wording of a feature request.

Implement request #1423937; FMSLogo no longer requires the -L on the command line to load a logo file on startup. This makes it easier to create file associations and allows you to drag-and-drop a Logo program on an FMSLogo desktop shortcut.

Add some simple tests for the command-line processing logic.

Rename "commandarg" to "g_FileToLoad" to be more explicit about its intended purpose.

Fix an inaccurate comment.

Redeclare bWidth and bHeight as static, since they are never used outside of main.cpp.

Fix the logic for moving down off of the commander history to the commander's input.

Add logic for copying the currently selected item in the commander history to the commander input.

Add the wxWANTS_CHARS style so that directional keys are passed to OnChar(). This enables the MSWLogo-style commander navigation.

Add a missing newline to a printf diagnostic.