minor, reactivate dgrepping for %c (count within month)

Author: hroptatyr

lib/date-core.c

@@ -251,8 +251,8 @@ dt_get_md(struct dt_d_s that)
 	}
 }
 
-/* too exotic to be public */
-static int
+/* too exotic to be public, nope bug #81 needs it */
+int
 dt_get_wcnt_mon(struct dt_d_s that)
 {
 	if (LIKELY(that.typ == DT_YMCW)) {

lib/date-core.h

@@ -462,6 +462,10 @@ extern unsigned int dt_get_yday(struct dt_d_s d);
  * Return N where N is the week within the year that THIS is in. */
 extern int dt_get_wcnt_year(struct dt_d_s this, unsigned int wkcnt_convention);
 
+/**
+ * Return N where N is the week within the month that THIS is in. */
+extern int dt_get_wcnt_mon(struct dt_d_s this);
+
 /* converters */
 extern dt_daisy_t dt_conv_to_daisy(struct dt_d_s);
 

src/dexpr.c

@@ -560,7 +560,7 @@ dexkv_matches_p(const_dexkv_t dkv, struct dt_dt_s d)
 		break;
 	case DT_SPFL_N_WCNT_MON:
 		/* exotic function, needs extern'ing */
-		cmp = /*dt_get_count(d)*/0;
+		cmp = dt_get_wcnt_mon(d.d);
 		break;
 	case DT_SPFL_N_DCNT_YEAR:
 		cmp = dt_get_yday(d.d);