bug#49836: Support ripgrep in semantic-symref-tool-grep

[Jim Porter]

On 9/18/2021 4:53 PM, Dmitry Gutov wrote:
> Perhaps we should split off the auto-detection feature and consider the 
> patch without it first. If people don't mind adding yet another 
> grep-or-ripgrep custom variable, this can be a reasonable change.
>
> After landing that we could discuss the auto-detection approach, on 
> local and remote machines, and whether we could manage to do it only 
> once per host.

I've done something along these lines for `urgrep'[1], a package to 
provide something like `M-x rgrep' that works across the seemingly 
ever-growing list of grep-like tools out there. I'm still working on 
improving the documentation before I think about putting it on ELPA, but 
maybe there are some bits in there that would be useful here. I'd be 
happy to coordinate on this if there's interest.

[1] https://github.com/jimporter/urgrep