Prompt not redisplayed after displaying completion possibilities about editline HOT 3 OPEN

Hmmm...

What made the problem go away was to set the prompt to a single unchanging string, and pass the string:

        result = readline(prompt);

It seems that references to prompt are kept around internally after readline() returns. If an attempt is made to clean up the prompt or regenerate the prompt, chaos follows. I suspect somewhere inside the prompt needs to be strdup'ed.

from editline.

In the original code there's no way to free stuff, so it's made to use a static string, or only change the contents of prompt between calls to readline().

Note: this is a very small an limited library. If you need anything more advanced I suggest looking at libedit (or readline) instead).

from editline.

Alas in this case I'm only making changes to the contents of prompt in between calls to readline(), but it's not working in this case.

If I hack the code to not free prompt (ie leak), the problem disappears.

Ideally if editline needs to keep prompt past the readline() call, it should strdup it (and then free). Alternatively, store the prompt length only if that is all that's needed.

At this stage we support libedit, but this is not available where we want to run. Readline is not an option because of GPL.

from editline.