[GRASS-dev] console example 3

[Michael Barton]

Yea, I know. ANOTHER diff and you haven't even gotten around to trying  
the first one.

Anyway, try this in GRASS 6.5 (develbranch_6).

File insertion autocompletion works when you type "=" or "," (for  
multiple maps) in the right context. For commands that take maps  
without argument (e.g., r.info elevaition.dem), you can type ctrl- 
space. So now it is is really an autocomplete feature.

Added better error trapping to all, including command history.

Cursor stays in window after running a command.

A few other cleanups to make it work more smoothly.

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When I first designed the CLI, I separated the entry and output areas  
because the programming was easier and cleaner, especially with basic  
StaticTextCtrl widgets that I started with. I only recently started  
looking at the StyledTextCtrl that Martin replaced the original output  
window with. This is a much more versatile text widget and provides  
some very real advantages now to using it for both an input and output  
window, primarily the autocompletion feature. This takes much less  
coding in a StyledTextCtrl than in other text widgets, and seems  
pretty robust functionally. The ability to put the cursor on any  
command string and press return to run it is also handy when input and  
output are combined.

If we substituted a STC for the input window as well as the output  
window, we would have access to all the autocompletion features, of  
course. But I'm not sure about the advantage of separating them now  
beyond making it easier to see which command is being run at any given  
time.

Anyway, if anyone of you (or others) who like to use commands would  
try this, I'd appreciate feedback. Martin has given a prior version a  
whirl.

Michael