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-rw-r--r--rational.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/rational.c b/rational.c
index e5992ed76f..e009ff2314 100644
--- a/rational.c
+++ b/rational.c
@@ -574,6 +574,7 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y)
*
* Syntax of string form:
*
+ * string form = extra spaces , rational , extra spaces ;
* rational = [ sign ] , unsigned rational ;
* unsigned rational = numerator | numerator , "/" , denominator ;
* numerator = integer part | fractional part | integer part , fractional part ;
@@ -581,8 +582,11 @@ f_rational_new_no_reduce2(VALUE klass, VALUE x, VALUE y)
* integer part = digits ;
* fractional part = "." , digits , [ ( "e" | "E" ) , [ sign ] , digits ] ;
* sign = "-" | "+" ;
- * digits = digit , [ { digit | "_" , digit } ] ;
+ * digits = digit , { digit | "_" , digit } ;
* digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9" ;
+ * extra spaces = ? \s* ? ;
+ *
+ * See String#to_r.
*/
static VALUE
nurat_f_rational(int argc, VALUE *argv, VALUE klass)
@@ -2268,6 +2272,8 @@ string_to_r_strict(VALUE self)
* '21 june 09'.to_r #=> (21/1)
* '21/06/09'.to_r #=> (7/2)
* 'bwv 1079'.to_r #=> (0/1)
+ *
+ * See Kernel.Rational.
*/
static VALUE
string_to_r(VALUE self)