Can't clear text using Backspace when you take input in tui mode

[SharathKumarK06]

Can't backspace when you take input in tui mode

When you take input in tui mode, like take input for new note or search, you cannot backspace.
When you press backspace, it print character 'h'.

[SharathKumarK06]

BTW Thank you for this wonderful program. This is awesome <3<3<3

[robert-lag]

BTW Thank you for this wonderful program. This is awesome <3<3<3

Always glad to hear that ;)

When you press backspace, it print character 'h'.

I just released a new version (Version 2.3.2) where I tried to solve the issue. Does it work there?

[SharathKumarK06]

I don't know if I am missing something. It still the same 😢
I git pull ed it and build using cargo build --release

[robert-lag]

Ok, then I'm not sure if this issue is really caused by brain. I repeatedly checked the section where user input is handled, but there doesn't seem to be anything wrong with it, and I also find it very unlikely that the problem lies with the IO library.😅

You could perhaps check if you are using the latest version (2.3.2) of brain using brn --version.

Also, does backspace work in your shell and other terminal applications, or does it print ^H?

[SharathKumarK06]

You could perhaps check if you are using the latest version (2.3.2) of brain using brn --version .

I git pulled and compiled from there.

I repeatedly checked the section where user input is handled, but there doesn't seem to be anything wrong with it, and I also find it very unlikely that the problem lies with the IO library.

Yeah, I looked into the source too and I'm not sure what is wrong(I just started learning rust after this project, not familiar how this library used, have some basic concepts and assumptions).
I started to think it might be from tui library or something.
Also I noticed that tui isn't refreshing after adding notes or modifying the name of a note.
Hope this small detail might help you somehow :).

Also, does backspace work in your shell and other terminal applications, or does it print ^H?

Yes, backspace works I don't have that kinda issues

[robert-lag]

Also I noticed that tui isn't refreshing after adding notes or modifying the name of a note.

Thank you for pointing this out. I'm aware of this issue but didn't solve it until now because it's only a minor issue and also a bit difficult to implement without creating new problems (e.g. How can you make sure that the notes are in the same order as before you automatically refreshed the page?). But I'm always open for Pull-Requests. ;)

Yes, backspace works I don't have that kinda issues

Could you give me the following information, so I could try to reproduce the issue:

• Your terminal
• The output of stty -a
• The output of showkey -a when pressing backspace and CTRL+backspace?
• What happens when you use CTRL+backspace instead of only backspace in brn tui?

I'm guessing that your terminal might send the character ^H instead of ^? when pressing backspace, which isn't recognized by the TUI library (crossterm).

[SharathKumarK06]

Could you give me the following information, so I could try to reproduce the issue:

So you don't have that issue?

Your terminal

qteminal default in kali linux

The output of stty -a

speed 38400 baud; rows 61; columns 237; line = 0;
intr = ^C; quit = ^\; erase = ^H; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; discard = ^O; min = 1; time = 0;
-parenb -parodd -cmspar cs8 -hupcl -cstopb cread -clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl -ixon -ixoff -iuclc -ixany -imaxbel iutf8
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke -flusho -extproc

The output of showkey -a when pressing backspace and CTRL+backspace?

Backspace - ^H 8 0010 0x08
CTRL+Backspace - ^? 127 0177 0x7f

What happens when you use CTRL+backspace instead of only backspace in brn tui?

Interestingly enough, it clears the text

I'm guessing that your terminal might send the character ^H instead of ^? when pressing backspace, which isn't recognized by the TUI library (crossterm).

Oh yeah, now I see the problem. That's why it prints 'h'.
So what do we do about it?

[robert-lag]

Now I'm able to reproduce the problem. It seems to occur on certain terminals which print ^H instead of ^? when pressing backspace (e.g. qterminal, xterm, etc.). This also seems to be a known issue for qterminal as seen here.

I'm now searching for a workaround for it. ;)

[robert-lag]

The latest version of brn (2.3.3) should now be able to fix this issue.