Re: problem using backspace / inserting characters in pre-filled multiline fields

[Thomas Dickey]

On Sun, 4 Sep 2005, Frank van Vugt wrote:

> > > When this happens, using backspace on say the second row will only delete
> > > characters up untill the first column of the second row, i.e. the cursor
> > > will *not* wrap to the end of the first row. Also, inserting characters on
> > > the first row simply won't work anymore.
>
> > > Is this known behaviour?
>
> > That last part doesn't sound like something I've seen.  I'm looking into
> > it now.
>
> ncurses-5.4-20050903.patch.gz solves the backspace part of the problem,
> allthough deleting characters on the end of say the second row won't bring
> words from the beginning of the third row back to the second as soon as there
> is enough space, but that may be a bit too much for the existing logic in the
> code, I haven't checked.

yes - I'm not that familiar with that slice of the code.  I compared to
Solaris and noticed that it would not automatically wrap text to the next
line (given the same options), and compared against ncurses 5.2 to see
whether the difference was due to one of my own changes, and decided that 
it was not.  But since it wasn't doing the expected thing for backspacing
over wrapped text, I modified it to do this.

> Let me clarify the insert part of the problem a bit more. It's not the first
> row per se, it's all rows that end with a character of a word that 'normally'
> would have been wrapped. These lines don't accept any (regular) characters
> anywhere (they do accept backspace now).

I think I understand.  At the moment I'm mostly concerned with ironing out 
isolated bugs for the 5.5 release, but this is something to investigate
and improved.

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net