Re: terminfo capability for hyperlinks

[Thomas Dickey]

On Thu, Jan 02, 2025 at 07:14:27PM -0500, Thomas Dickey wrote:
> On Fri, Jan 03, 2025 at 12:54:45AM +0100, Bruno Haible via Bug reports for 
> ncurses, the GNU implementation of curses wrote:
> > Hi,
> > 
> > For about 7 years, this writeup explains how to use hyperlinks in
> > terminal emulators:
> >   https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda

By the way, among that guy's other accomplishments, he was the author
of the change which I commented on a few years ago, here:

https://invisible-island.net/ncurses/ncurses-slang.html#compare_picsmap

        gnome-terminal 3.26.1 (2016) used all of the available memory in the
        machine.  I had only allocated a gigabyte (which left some 500
        megabytes for the terminal), and it used that up in less than a minute. 
        Revisiting this with two gigabytes, it lasted longer.  While dots was
        running I could see in top that gnome-terminal also was using most of
        the CPU time.

        Normally dots's output rate is limited by the computer's execution
        speed, along with the relative effort required to update the X display
        versus formatting escape sequences for moving the cursor and changing
        colors.  For instance, with xterm, the CPU load for the terminal
        emulator and dots are roughly the same.  With both gnome-terminal and
        konsole, the terminal emulator uses most of the CPU time; with the
        worst observed performance from gnome-terminal.

        Running out of memory when running a simple program like dots shows a
        serious defect in the terminal emulator, or more likely, the VTE
        library (since other terminals using this library have the same
        deficiencies).  Debian/testing had the most recent version 0.50 (2017)
        at the time this section was written.

-- 
Thomas E. Dickey <dickey@invisible-island.net>
https://invisible-island.net

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