From: Simon Strandgaard <0bz63fz3m1qt3001@...>
Date: 2003-07-02T17:56:15+09:00
Subject: Re: [ANN] Aeditor-0.1 is unleashed

On Wed, 02 Jul 2003 18:07:02 +0900, Stephen Lewis wrote:

> On Wed, 2 Jul 2003 15:54:59 +0900
> "Simon Strandgaard" <0bz63fz3m1qt3001@sneakemail.com> wrote:
> 
>> On Wed, 02 Jul 2003 14:58:45 +0900, Stephen Lewis wrote:
> [snip]
>> > A few other things that I noticed fairly quickly:
>> >   1) How should I quit? - I found many ways to "quit" through
>> >      unhandled exceptions (escape enter, shift-fkey, ctrl-c enter
>> >      etc:) 
>> 
>> Escape (ascii code 27) should terminate the application. The story
>> about Ncurses and the escape key is wierd: I think it is trying to
>> compose a escape code, if no cobination key is pressed within a
>> second, the ascii code 27 should be omitted ?
>                                       ^^^^^^^ --> emitted?

'omitted' -> 'emitted'  :-)
                                      

> See below for what happens for me when I hit escape :)
> 
> As to the delay, the ncurses man page mentions this in its environment
> variables section:
> 
>  ESCDELAY
>  Specifies  the total time, in milliseconds, for which ncurses will     
>  await a character sequence, e.g., a  function key.   The  default  
>  value, 1000 milliseconds, is enough for most uses.  However, it is     
>  made a variable to accommodate unusual applications.
>  ...

OK.. I wasn't aware of this environment variable.
I wonder if its possible to locally setenv to another value, so that it 
only affects Aeditor ?
 

>> >   3) No backspace (or foward-delete)?  ctrl-h didn't work either
>> 
>> The delete-key is not yet supported.
>> 
>> The backspace-key (ascii code 9) should be bound to cmd_backspace.
>> Maybe your backspace-key is generating something else ?
> 
> Hitting backspace generates this in the log:
> 
> Control#dispatch:  Unknown event occured
> ncurses-event = 263
> 
> ctrl-h generates the same... :/

Doing some decimal2octal conversion:

#define KEY_BACKSPACE	0407		/* backspace key */

I have now added this keybinding :-)


>> Can tell me what happens in the 'log' file if you press Escape ?
>> The message should look like the following:
> 
> Given that in control.rb, lines 217-218:
> when 27  # escape key
>     raise
> 
> ;)

I must find a more gentle way to terminate this application :-)

 
>> >   5) Single line is fairly sluggish (I know, I know, premature
>> >      optimisation :)
>> 
>> three lines is the minimum: 2 lines containing menues,  1 line
>> containing text.
>> Rigth now it raises an exception if one attempt to make the window
>> smaller than 3 lines. 
> 
> Sorry, I forgot the word "scrolling" - scrolling by a single line is
> quite slow, but it is the same speed as scrolling by a page so I
> imagine it can be sped up in the future. It wasn't really a big thing,
> just thought I'd mention it:)

Yes vertical-movement is extremly slow. This is because of the undo/redo
system, which takes a full snapshot of the buffer everytime.
I have not yet implemented a Buffer#get_state_xy.. which is suppose only
to take a snapshot of the (X, Y) position.

I follow the idiom: make it work, make it right, make it fast.
Right now its about getting things working :-)

--
Simon Strandgaard