fix: conflict with indentifiers starting with 'e'

src/scanner.c

@@ -405,10 +405,9 @@ bool tree_sitter_fsharp_external_scanner_scan(void *payload, TSLexer *lexer,
     }
   } else if (lexer->lookahead == 'e' &&
              (valid_symbols[ELSE] || valid_symbols[ELIF] ||
-              valid_symbols[DEDENT] || valid_symbols[END])) {
-    lexer->mark_end(lexer);
-    int16_t token_indent_level = lexer->get_column(lexer);
+              valid_symbols[END] || valid_symbols[DEDENT])) {
     advance(lexer);
+    int16_t token_indent_level = lexer->get_column(lexer);
     if (lexer->lookahead == 'l') {
       advance(lexer);
       if (lexer->lookahead == 's' &&

test/corpus/expr.txt

@@ -3214,3 +3214,41 @@ do
                       (identifier))))
                 (long_identifier_or_op
                   (identifier))))))))))
+
+================================================================================
+if-then-else follow by identifier starting with 'e'
+================================================================================
+
+let f x =
+  let a = if b then 0 else 1
+  exit b
+
+--------------------------------------------------------------------------------
+
+(file
+  (value_declaration
+    (function_or_value_defn
+      (function_declaration_left
+        (identifier)
+        (argument_patterns
+          (long_identifier
+            (identifier))))
+      (declaration_expression
+        (function_or_value_defn
+          (value_declaration_left
+            (identifier_pattern
+              (long_identifier_or_op
+                (identifier))))
+          (if_expression
+            (long_identifier_or_op
+              (identifier))
+            (const
+              (int))
+            (const
+              (int))))
+        (application_expression
+          (long_identifier_or_op
+            (identifier))
+          (long_identifier_or_op
+            (long_identifier
+              (identifier))))))))