Meta-, does nothing in TEdit with an Italian keyboard on Linux

[pamoroso]

Describe the bug

In TEdit, pressing Meta-, moves the caret left and Meta-. right by one character. But pressing Meta-, on my italian keyboard does nothing and the caret doesn't move. Meta-. works as expected.

To Reproduce

Steps to reproduce the behavior:

1. launch Medley
2. open TEdit
3. type one word
4. place the caret at the center of the word
5. press Meta-, on an Italian keyboard

Expected behavior

The caret moves left by one character.

Screenshots

N/A

Context (please complete the following information):

• Are you using online.interlisp.org? no
• OS: Linux
• OS Version: Mint 22 Cinnamon
• Display/window system: X11 + VNC
• Host arch: x86_64 (System76 Merkaat)
• Maiko version: 3c4d9f5393e56857d1e75352f8d8d0a0c9d91e01
• IL:MAKESYSDATE: 21-Jan-2025 04:48:26

Additional context

The output of xev when , is pressed:

KeyPress event, serial 28, synthetic NO, window 0x4200001,
    root 0x5cf, subw 0x4200002, time 39556239, (45,22), root:(110,825),
    state 0x0, keycode 59 (keysym 0x2c, comma), same_screen YES,
    XLookupString gives 1 bytes: (2c) ","
    XmbLookupString gives 1 bytes: (2c) ","
    XFilterEvent returns: False

KeyRelease event, serial 28, synthetic NO, window 0x4200001,
    root 0x5cf, subw 0x4200002, time 39556351, (45,22), root:(110,825),
    state 0x0, keycode 59 (keysym 0x2c, comma), same_screen YES,
    XLookupString gives 1 bytes: (2c) ","
    XFilterEvent returns: False

This issue may be related to the behavior of the < key on my keyboard described in #1828.

[rmkaplan]

The default Tedit readtable arms both Meta-, and Meta-< to go back one character. If the Italian keyboard doesn’t produce the expected key-bits for those Meta combinations, the backup won’t be triggered. If you know what bits are showing up for those combinations, then you could add those to the Tedit readtable using TEDIT.SETFUNCTION. Something like (TEDIT “Meta,???" (FUNCTION \TEDIT.ONECHAR.BACKWARD))

…

On Jan 22, 2025, at 4:08 AM, Paolo Amoroso ***@***.***> wrote: Describe the bug In TEdit, pressing Meta-, moves the caret left and Meta-. right by one character. But pressing Meta-, on my italian keyboard <https://i.snap.as/wAoI3ouY.jpg> does nothing and the caret doesn't move. Meta-. works as expected. To Reproduce Steps to reproduce the behavior: launch Medley open TEdit type one word place the caret at the center of the word press Meta-, on an Italian keyboard Expected behavior The caret moves left by one character. Screenshots N/A Context (please complete the following information): Are you using online.interlisp.org? no OS: Linux OS Version: Mint 22 Cinnamon Display/window system: X11 + VNC Host arch: x86_64 (System76 Merkaat) Maiko version: 3c4d9f5393e56857d1e75352f8d8d0a0c9d91e01 IL:MAKESYSDATE: 21-Jan-2025 04:48:26 Additional context The output of xev when , is pressed: KeyPress event, serial 28, synthetic NO, window 0x4200001, root 0x5cf, subw 0x4200002, time 39556239, (45,22), root:(110,825), state 0x0, keycode 59 (keysym 0x2c, comma), same_screen YES, XLookupString gives 1 bytes: (2c) "," XmbLookupString gives 1 bytes: (2c) "," XFilterEvent returns: False KeyRelease event, serial 28, synthetic NO, window 0x4200001, root 0x5cf, subw 0x4200002, time 39556351, (45,22), root:(110,825), state 0x0, keycode 59 (keysym 0x2c, comma), same_screen YES, XLookupString gives 1 bytes: (2c) "," XFilterEvent returns: False This issue may be related to the behavior of the < key on my keyboard described in #1828 <#1828>. — Reply to this email directly, view it on GitHub <#1985>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJJJNGKRYAPYH2L6LCT2L6C4NAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43ASLTON2WKOZSHAYDIMRRG43TMNA>. You are receiving this because you are subscribed to this thread.

[pamoroso]

Do I need the keycode reported by xev? Something like this?

(TEDIT.SETFUNCTION “Meta,keycode" (FUNCTION \TEDIT.ONECHAR.BACKWARD))

[rmkaplan]

You need to know how the key surfaces in Lisp. I added WHICHKEY to lispusers, type (WHICHKEY) and then hold down the key of interest.

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On Jan 22, 2025, at 8:38 AM, Paolo Amoroso ***@***.***> wrote: Do I need the keycode reported by xev? Something like this? (TEDIT.SETFUNCTION “Meta,keycode" (FUNCTION \TEDIT.ONECHAR.BACKWARD)) — Reply to this email directly, view it on GitHub <#1985 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJKJGGONBZWS3YDU4Z32L7CSBAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMBXG4ZTCNJXHA>. You are receiving this because you commented.

[pamoroso]

When I call WHICHKEY and press Meta-, the function prints #1,4 and returns NIL. Not sure if I'm using it correctly.

[rmkaplan]

What happens when you press just the comma on the different keyboards, without the meta?

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On Jan 23, 2025, at 8:40 AM, Paolo Amoroso ***@***.***> wrote: When I call WHICHKEY and press Meta-, the function prints #1,4 and returns NIL. Not sure if I'm using it correctly. — Reply to this email directly, view it on GitHub <#1985 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJOEHQ5UBXPH5R2HUVL2MELPBAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMJQGM2TMMJWGQ>. You are receiving this because you commented.

[pamoroso]

If I press just the comma WHICHKEY prints , and returns NIL.

[nbriggs]

@pamoroso you have to hold the comma (or any other key) down immediately after starting (WHICHKEY) until it returns either a key or a list of keys, or NIL

[pamoroso]

Thanks, I was doing it wrong. When pressing and holding Meta-, WHICHKEY prints (%, <) and returns #1,4. With just , it prints (%, <) and returns ,.

[nbriggs]

You're holding down two keys (meta and comma) - WHICHKEY finds the first physical key in the list \KEYNAMES for which (KEYDOWNP keyname) is true.

[nbriggs]

Running on macOS, with TEDIT dated 11-Jan-2025, on a US keyboard, Meta-, does nothing but Meta-. advances the caret by TWO characters.

[nbriggs]

BUT... that is inconsistent, it seems to depend on where in the display the line with the caret is.

[pamoroso]

I misunderstood WHICHKEY again and assumed it also accepts key combinations. Calling the function (hopefully) correctly it returns (BLANK-TOP KEYBOARD DBK-META) when pressing Alt. It returns (%, <) and prints , when pressing ,.

[nbriggs]

Then your keyboard has the expected behavior. You're using ldex or ldesdl?

[pamoroso]

I'm using ldex, I haven't been building for SDL since using VNC.

[rmkaplan]

I changed WHICHKEY so that it returns a list of all the down keys. I think the #1,4 that you see is what shows up when you return to the exec and the keys are still down,

…

On Jan 23, 2025, at 1:30 PM, Paolo Amoroso ***@***.***> wrote: I'm using ldex, I haven't been building for SDL since using VNC. — Reply to this email directly, view it on GitHub <#1985 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJMRENIFAA7BIXQG5KT2MFNQDAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMJRGA2TMNBRGM>. You are receiving this because you commented.

[rmkaplan]

In terms of moving multiple characters, it may be a timing issues. If you just hold meta-. down, for me it just zips across the document. I also see repetition of all other keys. If you hold down just the “a” key, you start with one a, and then it just keeps going. Isn’t there some logic that suppresses transitions until the bitvector has changed in some way?

…

On Jan 23, 2025, at 11:45 AM, Nick Briggs ***@***.***> wrote: BUT... that is inconsistent, it seems to depend on where in the display the line with the caret is. — Reply to this email directly, view it on GitHub <#1985 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJODD2IEHSYVB63ERL32MFBFZAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMJQHA3TGMRVGY>. You are receiving this because you commented.

[pamoroso]

Pressing Meta-, with the updated WHICHKEY returns ((%, <) (BLANK-TOP KEYBOARD DBK-META)).

[rmkaplan]

Which is what I would expect. But it is still the case that it doesn’t work for the Italian keyboard? Try tracing \TEDIT.ONECHAR.FORWARD and \TEDIT.ONECHAR.BACKWARD—are they being called at all when their triggering keys are depressed?

…

On Jan 23, 2025, at 11:42 PM, Paolo Amoroso ***@***.***> wrote: Pressing Meta-, with the updated WHICHKEY returns ((%, <) (BLANK-TOP KEYBOARD DBK-META)). — Reply to this email directly, view it on GitHub <#1985 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQSTUJMOLZQB66AMLP6H5XT2MHVGPAVCNFSM6AAAAABVUY25M2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMMJRHA3DANJYGA>. You are receiving this because you commented.

[nbriggs]

For me, tracing on:

\TEDIT.ONECHAR.BACKWARD gets called each time I type meta-,
If I started with a single character selected then it goes from SEL 11-1-R to SEL 11-0-R the 1st time, then it stays at SEL 11-0-R after that. It never moves the caret, but it deselects the character. Same with word selection - it just deselects but doesn't move. If it was a blue selection, it seems to forget that it should be un-blued.
\TEDIT.ONECHAR.FORWARD gets called once each time I type meta-.
The selection in the call advances by two each time, and the caret position moves.
SEL: 3-1-R _ then SEL: 5-0-R _, then SEL: 7-0-R _ and so on. But then I try again with a different starting point and it advances properly, 7-0-L, 8-0-L -- ah I see the pattern: if it's an "R" it goes by two, if an "L" then by one.

[nbriggs]

(and the same for the one character backward - an L selection works, an R selection doesn't)

[pamoroso]

It still doesn't work for the Italian keyboard. But, weirdly, moving the caret left with Meta-, does work after tracing both \TEDIT.ONECHAR.FORWARD and \TEDIT.ONECHAR.BACKWARD. Tracing only the former is not enough for Meta-, to move the caret. Meta-. already worked and still works under tracing.

This is the trace output after Meta-, followed by Meta-.:

[pamoroso]

I did a few more tests and Meta-, seems to be working fine even without tracing \TEDIT.ONECHAR.FORWARD.

I'm using a 2-Jan-2025 07:29:14 loadup, which is the only working one I have because of #1986. I'm reasonably sure Meta-, didn't seem to work with the exact same loadup. Go figure.

[pamoroso]

I did more tests and these are my observations.

Sometimes Meta-, works, others not and there doesn't seem to be a pattern. Tracing \TEDIT.ONECHAR.FORWARD is not a requirement. At times Meta-, doesn't work but placing the caret elsewhere makes it work.

This is the only behavior I can reproduce:

• Meta-, does nothing when the caret is immediately after the last character of a word such as in word^
• Meta-. does nothing when the caret is immediately before the last character of a word such as in wor^d

[nbriggs]

@pamoroso - see my note about whether it's a Left or Right selection, 5 and 4 comments back from this.