Add list command

[arrrggghhh]

Hi,

I added a bash command to list git repositories in certain directories.

It doesn't start with git, but I found it useful in my workflow. I thought it might help some people.

Thanks!

[arrrggghhh]

I'm not sure why, commands get wrapped.

[hemanth]

Looks fine now?

[arrrggghhh]

@hemanth

It seems dollar signs in the last commands act like they are new line characters.

I tried to escape them with backslash, but pre commit hook says Unexpected token $ in JSON.

Currently, merged commands are broken and won't work.

This is what I inserted at the end of tips.json:

{
  "title": "List of git repositories in multiple directories.",
  "tip": "find -E /path1 /path2 /path3 \\( -regex '.*/\\.git$' -not -regex '.*/\\..*/\\.git$' \\) -type d -print0 | xargs -0 -I {} dirname {}",
  "alternatives": [
    "find /path1 /path2 /path3 -regextype posix-egrep \\( -regex '.*/\\.git$' -not -regex '.*/\\..*/\\.git$' \\) -type d -print0 | xargs -0 -I {} dirname {}"
  ]
}

And this is the generated markdown:

## List of git repositories in multiple directories.
```sh
find -E /path1 /path2 /path3 \( -regex '.*/\.git
 -not -regex '.*/\..*/\.git
 \) -type d -print0 | xargs -0 -I {} dirname {}
```
__Alternatives:__
```sh
find /path1 /path2 /path3 -regextype posix-egrep \( -regex '.*/\.git
 -not -regex '.*/\..*/\.git
 \) -type d -print0 | xargs -0 -I {} dirname {}
```

Also, this is the commands what I actually intended and confirmed to work:

# tip
find -E /path1 /path2 /path3 \( -regex '.*/\.git$' -not -regex '.*/\..*/\.git$' \) -type d -print0 | xargs -0 -I {} dirname {}

# alternatives
find /path1 /path2 /path3 -regextype posix-egrep \( -regex '.*/\.git$' -not -regex '.*/\..*/\.git$' \) -type d -print0 | xargs -0 -I {} dirname {}

Please take a look at this. Thanks!

[hemanth]

I am in a transit now.

//cc @spacewander got some spare time? 😇

[spacewander]

Maybe a bug of doxie?

[hemanth]

@spacewander Right, my bad...he was referring to the formatting issue, I was thinking it was something to do with the find command.

//cc @tomekwi

[spacewander]

@hemanth
Well...Don't mind it! As for the find command, we can shorten it from:

-regextype posix-egrep \( -regex '.*/\.git$' -not -regex '.*/\..*/\.git$' \) -type d -print0 | xargs -0 -I {} dirname {}

to

-regextype posix-egrep \( -regex '[^/]*/([^.]*/)*\.git$' \) -type d -exec dirname {} \;

Use -exec to replace xargs, and squash two regexes into one.