Merge deno_std in main repo (#3091)

The history of deno_std is persevered but rewritten to update links to issues and PRs

Fixes denoland/deno_std#603

2 files changed, 72 insertions, 0 deletions

diff --git a/std b/std
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-Subproject 43aafbf33285753e7b42230f0eb7969b300f71c
diff --git a/std/flags/README.md b/std/flags/README.md
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+# flags
+
+Command line arguments parser for Deno based on minimist
+
+# Example
+
+```ts
+const { args } = Deno;
+import { parse } from "https://deno.land/std/flags/mod.ts";
+
+console.dir(parse(args));
+```
+
+```
+$ deno example.ts -a beep -b boop
+{ _: [], a: 'beep', b: 'boop' }
+```
+
+```
+$ deno example.ts -x 3 -y 4 -n5 -abc --beep=boop foo bar baz
+{ _: [ 'foo', 'bar', 'baz' ],
+  x: 3,
+  y: 4,
+  n: 5,
+  a: true,
+  b: true,
+  c: true,
+  beep: 'boop' }
+```
+
+# API
+
+## const parsedArgs = parse(args, options = {});
+
+`parsedArgs._` contains all the arguments that didn't have an option associated
+with them.
+
+Numeric-looking arguments will be returned as numbers unless `options.string` or
+`options.boolean` is set for that argument name.
+
+Any arguments after `'--'` will not be parsed and will end up in `parsedArgs._`.
+
+options can be:
+
+- `options.string` - a string or array of strings argument names to always treat
+  as strings
+- `options.boolean` - a boolean, string or array of strings to always treat as
+  booleans. if `true` will treat all double hyphenated arguments without equal
+  signs as boolean (e.g. affects `--foo`, not `-f` or `--foo=bar`)
+- `options.alias` - an object mapping string names to strings or arrays of
+  string argument names to use as aliases
+- `options.default` - an object mapping string argument names to default values
+- `options.stopEarly` - when true, populate `parsedArgs._` with everything after
+  the first non-option
+- `options['--']` - when true, populate `parsedArgs._` with everything before
+  the `--` and `parsedArgs['--']` with everything after the `--`. Here's an
+  example:
+  ```ts
+  const { args } = Deno;
+  import { parse } from "https://deno.land/std/flags/mod.ts";
+  // options['--'] is now set to false
+  console.dir(parse(args, { "--": false }));
+  // $ deno example.ts -- a arg1
+  // output: { _: [ "example.ts", "a", "arg1" ] }
+  // options['--'] is now set to true
+  console.dir(parse(args, { "--": true }));
+  // $ deno example.ts -- a arg1
+  // output: { _: [ "example.ts" ], --: [ "a", "arg1" ] }
+  ```
+- `options.unknown` - a function which is invoked with a command line parameter
+  not defined in the `options` configuration object. If the function returns
+  `false`, the unknown option is not added to `parsedArgs`.