Bob Doolittle wrote:
> Garrett D'Amore wrote:
>> For years I've used the eightBitInput: false X resource with xterm.
>> This is because my shell (tcsh) has emacs key bindings, and it lets
>> me quickly edit the command using emacs key strokes like "M-f" and
>> "M-b" to go backwards and forwards in a line. This feature lets me
>> configure the terminal to send "Esc" for Meta followed by the
>> modified key (e.g. M-b sends "esc b".)
>>
>
> Just a minor correction. I also use this feature
> extensively. The difference between eightBitInput
> w/ Meta vs Esc is that Esc is a keystroke in
> itself, not a modifier, so if you want to do
> sequentially-modified keystrokes in emacs via Esc
> you have to press Esc separately each time before
> the key you want modified. Basically the
> application (emacs) is applying the modification.
> If you have a true Meta Key, and you set
> XTerm*vt100.eightBitInput:true, then while Meta is
> pressed this sets the parity bit of each character
> passed to the tty. You can hold down Meta and
> press several keys and have them all modified
> appropriately in the input stream to the
> application. This also requires that your stty
> settings are appropriate to handle 8-bit
> characters without parity (no stripping, etc).
> Did your stty defaults change perhaps?
No, we want it false. Up until very recently, by setting it false, Meta
combinations caused the modified keystroke to be sent (without the high
parity bit!), but prefixed by an escape character. This is the opposite
behavior from what you described, and has no need for special tty
settings. It also means that the application (in my case the tcsh
shell) doesn't have to deal with non-ASCII input.
>
> I also note you mention this resource set to false.
> That's backwards - you want it set to true. Typo?
No, I have it set right. But it isn't doing what it used to.
- Garrett
>
> -Bob
>
>> Since I installed b68 today, it seems this no longer works. I don't
>> know why. (The meta key does work, because Emacs running with its
>> own X11 frame responds properly to it.)
>>
>> Interestingly enough, dtterm has an analogous feature called
>> "kshMode", which works, except it uses the "Alt" key stroke instead
>> of "Meta".
>>
>> As an aside, one of my ancient, longstanding complaints about
>> gnome-terminal, and the reason I refuse to give up using xterm (to
>> this point anyway) is that it does not offer this configuration
>> option. (Neither does KDE's terminal, I believe.)
>>
>> If anyone has any insight into what happened to my "Meta" key
>> translations in xterm, I'd love to hear it. (And if anyone has any
>> insight into how to get this feature added to gnome-terminal, I'd
>> like to hear that too. I wonder from time to time if gnome-terminal
>> might be less expensive due to shared implementation than xterm...
>> .but maybe not.)
>>
>> -- Garrett
>>
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>
