replace MatchArmPatterns with Pattern

Author: mark-i-m

src/expressions/if-expr.md

@@ -44,7 +44,7 @@ assert_eq!(y, "Bigger");
 
 > **<sup>Syntax</sup>**\
 > _IfLetExpression_ :\
-> &nbsp;&nbsp; `if` `let` [_MatchArmPatterns_] `=` [_Expression_]<sub>_except struct or lazy boolean operator expression_</sub>
+> &nbsp;&nbsp; `if` `let` [_Pattern_] `=` [_Expression_]<sub>_except struct or lazy boolean operator expression_</sub>
 >              [_BlockExpression_]\
 > &nbsp;&nbsp; (`else` (
 >   [_BlockExpression_]
@@ -155,7 +155,7 @@ if let PAT = ( EXPR || EXPR ) { .. }
 [_BlockExpression_]: block-expr.md
 [_Expression_]: ../expressions.md
 [_LazyBooleanOperatorExpression_]: operator-expr.md#lazy-boolean-operators
-[_MatchArmPatterns_]: match-expr.md
+[_Pattern_]: ../patterns.md
 [_eRFCIfLetChain_]: https://github.com/rust-lang/rfcs/blob/master/text/2497-if-let-chains.md#rollout-plan-and-transitioning-to-rust-2018
 [`match` expression]: match-expr.md
 [scrutinee]: ../glossary.md#scrutinee

src/expressions/loop-expr.md

@@ -67,7 +67,7 @@ while i < 10 {
 
 > **<sup>Syntax</sup>**\
 > [_PredicatePatternLoopExpression_] :\
-> &nbsp;&nbsp; `while` `let` [_MatchArmPatterns_] `=` [_Expression_]<sub>_except struct or lazy boolean operator expression_</sub>
+> &nbsp;&nbsp; `while` `let` [_Pattern_] `=` [_Expression_]<sub>_except struct or lazy boolean operator expression_</sub>
 >              [_BlockExpression_]
 
 A `while let` loop is semantically similar to a `while` loop but in place of a
@@ -291,7 +291,6 @@ expression `()`.
 [LIFETIME_OR_LABEL]: ../tokens.md#lifetimes-and-loop-labels
 [_BlockExpression_]: block-expr.md
 [_Expression_]: ../expressions.md
-[_MatchArmPatterns_]: match-expr.md
 [_Pattern_]: ../patterns.md
 [`match` expression]: match-expr.md
 [scrutinee]: ../glossary.md#scrutinee

src/expressions/match-expr.md

@@ -15,10 +15,7 @@
 > &nbsp;&nbsp; _MatchArm_ `=>` [_Expression_] `,`<sup>?</sup>
 >
 > _MatchArm_ :\
-> &nbsp;&nbsp; [_OuterAttribute_]<sup>\*</sup> _MatchArmPatterns_ _MatchArmGuard_<sup>?</sup>
->
-> _MatchArmPatterns_ :\
-> &nbsp;&nbsp; `|`<sup>?</sup> [_Pattern_] ( `|` [_Pattern_] )<sup>\*</sup>
+> &nbsp;&nbsp; [_OuterAttribute_]<sup>\*</sup> [_Pattern_] _MatchArmGuard_<sup>?</sup>
 >
 > _MatchArmGuard_ :\
 > &nbsp;&nbsp; `if` [_Expression_]