add a --no-fixed-strings flag

[jsatk]

What version of ripgrep are you using?

ripgrep 0.8.1
-SIMD -AVX

How did you install ripgrep?

Homebrew

What operating system are you using ripgrep on?

macOS 10.13.5

Describe your question, feature request, or bug.

I rarely ever search using regular expressions. Normally I'm wanting to find some usage of a function or string. I was hoping there was a way to set rg --fixed-strings as the default behavior. Perhaps with a .rgrc or an environment variable?

Here's what I had in mind.

$ cat ~/.rgrc 
{
  "defaultSearchBehavior": "fixed-strings"
}
$ rg ".i8n(" # Would not explode

[okdana]

https://github.com/BurntSushi/ripgrep/blob/master/GUIDE.md#configuration-file

ETA: Might be useful to have a --no-fixed-strings or whatever so that people who put -F in their defaults can negate it tho

[BurntSushi]

@okdana I agree that a --no-fixed-strings flag would be useful.

[jsatk]

Oops! I dug around and didn't see this info. Thank you!