ccommand-linereadline

Linenoise C api - any way to preload the buffer to set a default line

I'm using linenoise with a c command line style program. The standard way of using linenoise is to do a simple

char* line;

line = linenoise("prompt: ");

// Use the line in the app

free(line);

This presents the prompt, and then the user can enter a line, with great editing capabilities including history and hint management. The software is nice, and the code documentation is pretty good.

What I was wondering is, using the linenoise api, is there a way to "preset" the line buffer so that a default line is displayed and editable by the user? Perhaps using the asynch api?

Solution

  • Linenoise does not have an API function to prefill the input buffer with a default string. The standard usage:

    char *line = linenoise("prompt: ");

    always starts with an empty buffer for the user to edit. Neither the synchronous nor the asynchronous API provides a way to preset the line buffer.