gh-118323: Document && grammar syntax (#118324)

sobolevn · web-flow · commit 51aefc5bf907 · 2024-04-27T11:36:06.000+01:00
diff --git a/Grammar/python.gram b/Grammar/python.gram
@@ -78,6 +78,9 @@ _PyPegen_parse(Parser *p)
 #   Fail if e can be parsed, without consuming any input.
 # ~
 #   Commit to the current alternative, even if it fails to parse.
+# &&e
+#   Eager parse e. The parser will not backtrack and will immediately 
+#   fail with SyntaxError if e cannot be parsed.
 #
 
 # STARTING RULES

Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,9 @@ _PyPegen_parse(Parser *p)`
`78`	`78`	`# Fail if e can be parsed, without consuming any input.`
`79`	`79`	`# ~`
`80`	`80`	`# Commit to the current alternative, even if it fails to parse.`
	`81`	`+# &&e`
	`82`	`+# Eager parse e. The parser will not backtrack and will immediately`
	`83`	`+# fail with SyntaxError if e cannot be parsed.`
`81`	`84`	`#`
`82`	`85`
`83`	`86`	`# STARTING RULES`