Hana 9e216da9ef go.mod: add go.mod and move pygments to third_party
After go1.16, go will use module mode by default,
even when the repository is checked out under GOPATH
or in a one-off directory. Add go.mod, go.sum to keep
this repo buildable without opting out of the module
mode.

> go mod init github.com/mmcgrana/gobyexample
> go mod tidy
> go mod vendor

In module mode, the 'vendor' directory is special
and its contents will be actively maintained by the
go command. pygments aren't the dependency the go will
know about, so it will delete the contents from vendor
directory. Move it to `third_party` directory now.

And, vendor the blackfriday package.

Note: the tutorial contents are not affected by the
change in go1.16 because all the examples in this
tutorial ask users to run the go command with the
explicit list of files to be compiled (e.g.
`go run hello-world.go` or `go build command-line-arguments.go`).
When the source list is provided, the go command does
not have to compute the build list and whether it's
running in GOPATH mode or module mode becomes irrelevant.
2021-02-15 16:45:26 -05:00

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example by David Corbett begins here.
"Implements testable examples."
An example is a kind of thing. An example can be tested. An example is seldom tested.
example ends here.
----
[The] documentation [starts here.]
----
This extension adds examples, which may be tested.
Chapter: Usage
To add an example to the story, we write:
The foobar is an example.
To interact with it in Inform 6, we write something like:
To say (E - example): (-
print (object) {E};
-).
[The IDE's documentation viewer does not display the closing -). I don't know how to fix that.]
Section: Testing
We can make an example be tested using:
now the foobar is tested;
Example: * Exempli Gratia - A simple example.
*: "Exempli Gratia"
Include example by David Corbett.
The Kitchen is a room. The egg is an example, here.
Before dropping the egg:
now the egg is tested.
Test me with "get egg / drop egg".