clap/examples/git.md
Ed Page c90a4eabae fix(help): Make output more dense
In looking at other help output, I noticed that they use two spaces, in
place of clap's 4, and it doesn't suffer from legibility.  If it
doesn't make the output worse, let's go ahead and make it as dense so we
fit more content on the screen.

This is a part of #4132
2022-09-07 17:13:55 -05:00

2.3 KiB

Git is an example of several common subcommand patterns.

Help:

$ git
? failed
A fictional versioning CLI

Usage: git[EXE] <COMMAND>

Commands:
  clone  Clones repos
  diff   Compare two commits
  push   pushes things
  add    adds things
  stash  
  help   Print this message or the help of the given subcommand(s)

Options:
  -h, --help  Print help information

$ git help
A fictional versioning CLI

Usage: git[EXE] <COMMAND>

Commands:
  clone  Clones repos
  diff   Compare two commits
  push   pushes things
  add    adds things
  stash  
  help   Print this message or the help of the given subcommand(s)

Options:
  -h, --help  Print help information

$ git help add
adds things

Usage: git[EXE] add <PATH>...

Arguments:
  <PATH>...  Stuff to add

Options:
  -h, --help  Print help information

A basic argument:

$ git add
? failed
adds things

Usage: git[EXE] add <PATH>...

Arguments:
  <PATH>...  Stuff to add

Options:
  -h, --help  Print help information

$ git add Cargo.toml Cargo.lock
Adding ["Cargo.toml", "Cargo.lock"]

Default subcommand:

$ git stash -h
Usage: git[EXE] stash [OPTIONS]
       git[EXE] stash <COMMAND>

Commands:
  push   
  pop    
  apply  
  help   Print this message or the help of the given subcommand(s)

Options:
  -m, --message <MESSAGE>  
  -h, --help               Print help information

$ git stash push -h
Usage: git[EXE] stash push [OPTIONS]

Options:
  -m, --message <MESSAGE>  
  -h, --help               Print help information

$ git stash pop -h
Usage: git[EXE] stash pop [STASH]

Arguments:
  [STASH]  

Options:
  -h, --help  Print help information

$ git stash -m "Prototype"
Pushing Some("Prototype")

$ git stash pop
Popping None

$ git stash push -m "Prototype"
Pushing Some("Prototype")

$ git stash pop
Popping None

External subcommands:

$ git custom-tool arg1 --foo bar
Calling out to "custom-tool" with ["arg1", "--foo", "bar"]

Last argument:

$ git diff --help
Compare two commits

Usage: git[EXE] diff [COMMIT] [COMMIT] [-- <PATH>]

Arguments:
  [COMMIT]  
  [COMMIT]  
  [PATH]    

Options:
  -h, --help  Print help information

$ git diff
Diffing stage..worktree 

$ git diff ./src
Diffing stage..worktree ./src

$ git diff HEAD ./src
Diffing HEAD..worktree ./src

$ git diff HEAD~~ -- HEAD
Diffing HEAD~~..worktree HEAD