parser: document ban_unexpected_or_or.

Centril · Centril · commit 8f6a0cdb0fd4 · 2019-08-24T21:32:49.000+02:00
diff --git a/src/libsyntax/parse/parser/pat.rs b/src/libsyntax/parse/parser/pat.rs
@@ -90,6 +90,7 @@ impl<'a> Parser<'a> {
         }
     }
 
+    /// We have parsed `||` instead of `|`. Error and suggest `|` instead.
     fn ban_unexpected_or_or(&mut self) {
         self.struct_span_err(self.token.span, "unexpected token `||` after pattern")
             .span_suggestion(

Original file line number	Diff line number	Diff line change
`@@ -90,6 +90,7 @@ impl<'a> Parser<'a> {`
`90`	`90`	`}`
`91`	`91`	`}`
`92`	`92`
	`93`	+ /// We have parsed `\|\|` instead of `\|`. Error and suggest `\|` instead.
`93`	`94`	`fn ban_unexpected_or_or(&mut self) {`
`94`	`95`	self.struct_span_err(self.token.span, "unexpected token `\|\|` after pattern")
`95`	`96`	`.span_suggestion(`