Add more specificity to IsValidMonthCodeForCalendarInYear; use "calendar-dependent"

Author: sffc

spec.emu

@@ -983,7 +983,13 @@ contributors: Google, Ecma International
       </dl>
       <p>It performs the following steps when called:</p>
       <emu-alg>
-        Returns an implementation-and-calendar-defined Boolean as described above.
+        1. If IsValidMonthCodeForCalendar(_calendar_, _monthCode_) is *false*, then
+          1. Return *false*.
+        1. Let _monthCodeParts_ be ParseMonthCode(_monthCode_).
+        1. If _monthCodeParts_.[[IsLeap]] is *false*, then
+          1. Return *true*.
+        1. Assert: _calendar_ is one of *"chinese"*, *"dangi"*, or *"hebrew"*.
+        1. Return a calendar-dependent Boolean as described above.
       </emu-alg>
     </emu-clause>
 
@@ -1004,7 +1010,7 @@ contributors: Google, Ecma International
       </dl>
       <p>It performs the following steps when called:</p>
       <emu-alg>
-        Returns an implementation-and-calendar-defined completion as described above.
+        Returns a calendar-dependent completion as described above.
       </emu-alg>
     </emu-clause>
 
@@ -1024,7 +1030,7 @@ contributors: Google, Ecma International
       </dl>
       <p>It performs the following steps when called:</p>
       <emu-alg>
-        Returns an implementation-and-calendar-defined integer as described above.
+        Returns a calendar-dependent integer as described above.
       </emu-alg>
     </emu-clause>
 
@@ -1043,7 +1049,7 @@ contributors: Google, Ecma International
       </dl>
       <p>It performs the following steps when called:</p>
       <emu-alg>
-        Returns an implementation-and-calendar-defined integer as described above.
+        Returns a calendar-dependent integer as described above.
       </emu-alg>
     </emu-clause>