Re: [pushed] [gdb/tui] Fix TUI resizing for TERM=ansi

[Tom Tromey <tom@tromey.com>]

>>>>> "Tom" == Tom de Vries via Gdb-patches <gdb-patches@sourceware.org> writes:

Tom> As it happens, when TERM is set to ansi, readline decides that the terminal
Tom> cannot auto-wrap lines, and reserves one column to deal with that, and as a
Tom> result reports back one less than the actual screen width:
...
Tom> This is currently not causing trouble in testing because we have a workaround
Tom> in place in proc Term::resize.  If we disable the workaround:

Thank you for tracking this down.
I never even considered this might be a readline issue.

Tom> +      readline_hidden_cols = _rl_term_autowrap ? 0 : 1;

I hate to have a new dependency on a readline internal variable.
Don't some distros mark these as hidden in libreadline.so?
I feel like there was another bug along these lines.

However, I don't see another way to do it.
Maybe some official API could be added by the upstream readline.
Would you want to bring it up there?

Anyway it seems ok to me.

thanks,
Tom