mlr sort-within-records UT

Makefile.in

@@ -334,7 +334,7 @@ top_srcdir = @top_srcdir@
 # not GPL, thus no COPYING file
 AUTOMAKE_OPTIONS = foreign
 EXTRA_DIST = LICENSE.txt README.md
-SUBDIRS = c doc
+SUBDIRS = c
 all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-recursive
 

c/reg_test/expected/out

@@ -1729,6 +1729,22 @@ x=1
 a=3
 
 
+================================================================
+SORT-WITHIN-RECORDS
+
+mlr sort-within-records ./reg_test/input/sort-within-records.dkvp
+a=pan,b=pan,i=1,x=0.3467901443380824,y=0.7268028627434533
+a=eks,b=pan,i=2,x=0.7586799647899636,y=0.5221511083334797
+a=wye,b=wye,i=3,x=0.20460330576630303,y=0.33831852551664776
+a=eks,b=wye,i=4,x=0.38139939387114097,y=0.13418874328430463
+a=wye,b=pan,i=5,x=0.5732889198020006,y=0.8636244699032729
+a=zee,b=pan,i=6,x=0.5271261600918548,y=0.49322128674835697
+a=eks,b=zee,i=7,x=0.6117840605678454,y=0.1878849191181694
+a=zee,b=wye,i=8,x=0.5985540091064224,y=0.976181385699006
+a=hat,b=wye,i=9,x=0.03144187646093577,y=0.7495507603507059
+a=pan,b=wye,i=10,x=0.5026260055412137,y=0.9526183602969864
+
+
 ================================================================
 JOIN