Emacspeak term mode errors

["T. V. Raman" <raman@xxxxxxxxxxx>]

Before we go down the route of adding symbols,  try changing
last-input-event to last-command-char in the advice for
term-emulate- -- I believe that might just do the right thing.    tcross> Hi Raman, The point about the cursor moving left
    tcross> through the use of the arrow keys is a point I
    tcross> overlooked. I wonder though if you need to test for
    tcross> the column position and row if you have already
    tcross> confirmed the key entered by the user was a delete?
    tcross> At this point, I'm not even sure what is sent under
    tcross> the console when you hit the arrow keys.
    tcross> 
    tcross> I noticed you have changed the comparisons to use eq
    tcross> rather than the equal sign. This has certainly
    tcross> improved things as you now don't get a beep or a
    tcross> backtrace when you try to run M-x term. However, we
    tcross> need to add the symbolic names to the test as
    tcross> well. For example, now when you hit backspace,
    tcross> emacspeak says "newline". I believe this is because
    tcross> the test is falling through past the condition which
    tcross> checks for the user hitting the backspace key as it
    tcross> doesn't match 127. We probably need an or comparison
    tcross> i.e.
    tcross> 
    tcross> ((and (or (eq last-input-event 127) (eq
    tcross> last-input-event 'backspace)) (....
    tcross> 
    tcross> As you are not running X at the moment, I will look
    tcross> at this on the weekend and work out which symbolic
    tcross> names need to be added to the conditionals.
    tcross> 
    tcross> regards,
    tcross> 
    tcross> Tim
    tcross> 
    tcross> T. V. Raman writes:
    >> 
    >> 
    Tim> The other area which I'd like some guideance on is the
    Tim> way term-emulate-terminal's defadvice is testing for
    Tim> certain conditions.  To my naive eye, it looks like the
    Tim> test is somewhat over engineered and we could simplify
    Tim> it a bit, but experience has tought me that usually it
    Tim> is me who is missing some subtlety regarding what is
    Tim> going on. As an example, the following test is performed
    Tim> to determine if the user has hit backspace
    Tim> 
    Tim> ((and (= last-input-event 127) (= new-row
    Tim> emacspeak-eterm-row) (= -1 (- new-column
    Tim> emacspeak-eterm-column)) current-char) (....
    Tim> 
    >> 
 > The above is not over-engineered. 
 > You can have the cursor move left when the user did not in fact
 > backspace, e.g. when you move the cursor left in vi.
 > 
 > In general there are two good regression tests to check things
 > with when playing with the advice on term-emulate-terminal:
 > 
 > A) VI
 > B) lynx -- especially its config options
 >     Tim> I'm thinking that if we assume the only way the new
 >     Tim> column would be one less than the previous column and we
 >     Tim> are on the same row, then the user entered a
 >     Tim> backspace. Therefore, we cold simplify things by doing
 >     Tim> 
 >     Tim> ((and (= new-row emacspeak-eterm-row) (= -1 (-
 >     Tim> new-column emacspeak-eterm-column))) (....
 >     Tim> 
 >     Tim> but maybe I'm missing some subtle issue, such as process
 >     Tim> line filtering etc. Obviously, I can work this out
 >     Tim> through trial and error, but why re-invent the wheel if
 >     Tim> it can be avoided.
 >     Tim> 
 >     Tim> Tim
 >     Tim> 
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 > -- 
 > Best Regards,
 > --raman
 > 
 >       
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-- 
Best Regards,
--raman

      
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