Add else-if-let keyword snippet

Author: A4-Tacks

crates/ide-completion/src/completions/expr.rs

@@ -389,6 +389,7 @@ pub(crate) fn complete_expr_path(
                     if after_if_expr {
                         add_keyword("else", "else {\n    $0\n}");
                         add_keyword("else if", "else if $1 {\n    $0\n}");
+                        add_keyword("else if let", "else if let $1 = $2 {\n    $0\n}");
                     }
 
                     if wants_raw_token {

crates/ide-completion/src/tests/expression.rs

@@ -294,6 +294,7 @@ fn complete_after_if_expr() {
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false
@@ -957,6 +958,7 @@ fn foo() { if foo {} $0 }
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false
@@ -1000,6 +1002,7 @@ fn foo() { if foo {} el$0 }
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false
@@ -1036,12 +1039,13 @@ fn foo() { if foo {} el$0 }
 fn foo() { bar(if foo {} $0) }
 "#,
         expect![[r#"
-            fn foo() fn()
-            bt u32    u32
+            fn foo()  fn()
+            bt u32     u32
             kw const
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw false
             kw for
             kw if
@@ -1061,12 +1065,13 @@ fn foo() { bar(if foo {} $0) }
 fn foo() { bar(if foo {} el$0) }
 "#,
         expect![[r#"
-            fn foo() fn()
-            bt u32    u32
+            fn foo()  fn()
+            bt u32     u32
             kw const
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw false
             kw for
             kw if
@@ -1093,6 +1098,7 @@ fn foo() { if foo {} $0 let x = 92; }
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false
@@ -1136,6 +1142,7 @@ fn foo() { if foo {} el$0 let x = 92; }
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false
@@ -1179,6 +1186,7 @@ fn foo() { if foo {} el$0 { let x = 92; } }
             kw crate::
             kw else
             kw else if
+            kw else if let
             kw enum
             kw extern
             kw false