Add "pipe block" comment style (#58)

Tom Harding · Marcin Szamotulski · commit 8528d2a4a84f · 2018-03-31T12:15:55.000+02:00
A common style of comment block in PureScript starts each line with `-- |`, for example:

```
-- | This is a very
-- | important comment.
f = id
```

This commit adds that style to the allowed list.
diff --git a/ftplugin/purescript.vim b/ftplugin/purescript.vim
@@ -1,4 +1,4 @@
-setlocal comments=s1fl:{-,mb:\ \ ,ex:-},:--
+setlocal comments=s1fl:{-,mb:\ \ ,ex:-},:--\ \|,:--
 setlocal include=^import
 setlocal includeexpr=printf('%s.purs',substitute(v:fname,'\\.','/','g'))
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-setlocal comments=s1fl:{-,mb:\ \ ,ex:-},:--`
	`1`	`+setlocal comments=s1fl:{-,mb:\ \ ,ex:-},:--\ \\|,:--`
`2`	`2`	`setlocal include=^import`
`3`	`3`	`setlocal includeexpr=printf('%s.purs',substitute(v:fname,'\\.','/','g'))`
`4`	`4`