On 25/02/2023 6:36 PM, Daren Scot Wilson wrote:
> stdin.readln() works fine until I, out of habit, use the up arrow to recall an earlier input and the left/right to move around and change a character.   How do I get that to work?

Not with that module.

You can either use GNU readline itself, or Adam's version within arsd.

On Saturday, 25 February 2023 at 05:41:48 UTC, Richard (Rikki) Andrew Cattermole wrote:
> On 25/02/2023 6:36 PM, Daren Scot Wilson wrote:
>> stdin.readln() works fine until I, out of habit, use the up arrow to recall an earlier input and the left/right to move around and change a character.   How do I get that to work?
>
> Not with that module.
>
> You can either use GNU readline itself, or Adam's version within arsd.

I went with readline.  Left/right arrows work, but up arrow still does not recall earlier commands. Maybe I need also a separate input history thing?

On 25/02/2023 9:45 PM, Daren Scot Wilson wrote:
> I went with readline.  Left/right arrows work, but up arrow still does not recall earlier commands. Maybe I need also a separate input history thing?

https://tiswww.case.edu/php/chet/readline/readline.html#Basic-Behavior

On Saturday, 25 February 2023 at 08:47:42 UTC, Richard (Rikki) Andrew Cattermole wrote:
> On 25/02/2023 9:45 PM, Daren Scot Wilson wrote:
>> I went with readline.  Left/right arrows work, but up arrow still does not recall earlier commands. Maybe I need also a separate input history thing?
>
> https://tiswww.case.edu/php/chet/readline/readline.html#Basic-Behavior

Hmm... the add_history(), or maybe it's rl_add_history(), function seems to have been in ancient readline versions but at some point all line history code was taken out to be its own library.

https://tiswww.case.edu/php/chet/readline/rltop.html
https://tiswww.case.edu/php/chet/readline/history.html

Arch Linux drags in both readline.so and history.so in its readline package. No one notices!


Trying import gnu.history;  fails since there's no distinct 'history' package (yet) and Dub doesn't drag it in along with readline.

D can call C and link to anything in /usr/lib easily. Done. It works!   How does D know to link to the libhistory.so library?  I didn't say "history" anywhere.  But it works.

    extern (C) {
        void add_history(const char*);
    }


I'm tempted to make a history package and submit it to DUB. Maybe. After dinner...