Initial vendor packages

Signed-off-by: Valentin Popov <valentin@popov.link>

1 files changed, 170 insertions, 0 deletions

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+Git is an example of several common subcommand patterns.
+
+Help:
+```console
+$ 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
+
+$ 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
+
+$ git help add
+adds things
+
+Usage: git[EXE] add <PATH>...
+
+Arguments:
+  <PATH>...  Stuff to add
+
+Options:
+  -h, --help  Print help
+
+```
+
+A basic argument:
+```console
+$ git add
+? failed
+adds things
+
+Usage: git[EXE] add <PATH>...
+
+Arguments:
+  <PATH>...  Stuff to add
+
+Options:
+  -h, --help  Print help
+
+$ git add Cargo.toml Cargo.lock
+Adding ["Cargo.toml", "Cargo.lock"]
+
+```
+
+Default subcommand:
+```console
+$ git stash -h
+Usage: git[EXE] stash [OPTIONS]
+       git[EXE] stash push [OPTIONS]
+       git[EXE] stash pop [STASH]
+       git[EXE] stash apply [STASH]
+       git[EXE] stash help [COMMAND]...
+
+Options:
+  -m, --message <MESSAGE>  
+  -h, --help               Print help
+
+git[EXE] stash push:
+  -m, --message <MESSAGE>  
+  -h, --help               Print help
+
+git[EXE] stash pop:
+  -h, --help   Print help
+  [STASH]  
+
+git[EXE] stash apply:
+  -h, --help   Print help
+  [STASH]  
+
+git[EXE] stash help:
+Print this message or the help of the given subcommand(s)
+  [COMMAND]...  Print help for the subcommand(s)
+
+$ git stash push -h
+Usage: git[EXE] stash push [OPTIONS]
+
+Options:
+  -m, --message <MESSAGE>  
+  -h, --help               Print help
+
+$ git stash pop -h
+Usage: git[EXE] stash pop [STASH]
+
+Arguments:
+  [STASH]  
+
+Options:
+  -h, --help  Print help
+
+$ 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:
+```console
+$ git custom-tool arg1 --foo bar
+Calling out to "custom-tool" with ["arg1", "--foo", "bar"]
+
+```
+
+Last argument:
+```console
+$ git diff --help
+Compare two commits
+
+Usage: git[EXE] diff [OPTIONS] [COMMIT] [COMMIT] [-- <PATH>]
+
+Arguments:
+  [COMMIT]  
+  [COMMIT]  
+  [PATH]    
+
+Options:
+      --color[=<WHEN>]  [default: auto] [possible values: always, auto, never]
+  -h, --help            Print help
+
+$ git diff
+Diffing stage..worktree  (color=auto)
+
+$ git diff ./src
+Diffing stage..worktree ./src (color=auto)
+
+$ git diff HEAD ./src
+Diffing HEAD..worktree ./src (color=auto)
+
+$ git diff HEAD~~ -- HEAD
+Diffing HEAD~~..worktree HEAD (color=auto)
+
+$ git diff --color
+Diffing stage..worktree  (color=always)
+
+$ git diff --color=never
+Diffing stage..worktree  (color=never)
+
+```