Cursor not blinking in build 19

[vefatica]

That was the first thing I noticed.

Still no blink after these.

v:\> echos ^e[?12h

v:\> echos ^e[3 q

 

[rconn]

Which is because there is no such thing as a blinking cursor, unless you're using the default Windows caret (can't, because it doesn't do any of the things you want), or you set the blinking with the ANSI sequence (not done by default, because it breaks screen readers).

 

[vefatica]

I don't understand. It used to blink and either of those control sequences is supposed to make it blink.

 

[vefatica]

And with TCCv36 it doesn't blink in WT either; it blinks with TCCv35. I think TCCv36 is sending the wrong control sequence.

 

[rconn]

First, you're referring to the caret, not the cursor.

Second, the only blinking caret is the default Windows system one, which blinks for a few seconds and then goes steady. Every other blinking caret (TCMD, Windows Terminal, etc.) isn't really a caret, it's a line or block of pixels that is alternately drawn and erased when a timer signals.

Third, the ANSI "blink caret" escape sequences are distinct from the non-blinking variants:

ESC[1 q - blinking block
ESC[2 q - steady block
ESC[3 q - blinking underline
ESC[4 q - steady underline
ESC[5 q - blinking bar
ESC[6 q - steady bar

Fourth, defaulting to a blinking caret breaks screen readers.

 

[rconn]

And with TCCv36 it doesn't blink in WT either; it blinks with TCCv35. I think TCCv36 is sending the wrong control sequence.

TCC v35 isn't sending a control sequence, and WT isn't blinking a caret. It's alternately drawing and erasing a line, because you haven't defined a caret shape / blink state.

If you sent an ANSI caret sequence it would use that and only blink if it was a blink sequence.

 

[vefatica]

I mean the thing that shows the position on the command line, whatever it's called. There's also

[TABLE]
[TR]
[td]ESC [ 0 SP q[/td] [td]DECSCUSR[/td] [td]User Shape[/td] [td]Default cursor shape configured by the user[/td]
[/TR]
[/TABLE]

^e[3 q^e[0 q gives me what I want in WT, a blinking Underline of my configured height.

And the MS docs calls it a "cursor".

 

[rconn]

I mean the thing that shows the position on the command line, whatever it's called. There's also

[TABLE]
[TR]
[td]ESC [ 0 SP q[/td] [td]DECSCUSR[/td] [td]User Shape[/td] [td]Default cursor shape configured by the user[/td]
[/TR]
[/TABLE]

^e[3 q^e[0 q gives me what I want in WT, a blinking Underline of my configured height.

And the MS docs calls it a "cursor".

How are you setting your "configured height"? ^e[0 q doesn't do that, it's the same as a 1 (blinking block).

 

[rconn]

And the MS docs calls it a "cursor".

Then the MS docs are wrong. Carets and Cursors are entirely different, and have different APIs.

People have called carets "cursors" in character mode apps for decades; however in a GUI app like TCMD or WT they are definitely NOT the same thing.

 

[vefatica]

How are you setting your "configured height"? ^e[0 q doesn't do that, it's the same as a 1 (blinking block).

The doc I quoted was this one.

In WT I configure the cursor shape/height under specific_profile\Appearance\Cursor. That's taller than the default underscore and that's what I get from ^e[0 q.

 

[vefatica]

I don't mind the default underscore (not 15%) but it's gotta blink (as before build 19).

That control sequence or its implementation could be WT-specific.