test(typesetters): Add test for U+00AD soft hyphens

tests/feat-unicode-softhyphen.expected

@@ -0,0 +1,106 @@
+Set paper size 	297.6377985	419.5275636
+Begin page
+Mx 	14.8819
+My 	28.5447
+Set font 	Gentium Plus;10;400;;normal;;;LTR
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	44.6950
+T	76 83 w=8.0078	(ip)
+Mx 	52.7028
+T	86 88 80 w=17.1924	(sum)
+Mx 	69.8952
+T	71 82 w=10.2295	(do)
+Mx 	80.1247
+T	79 82 85 w=11.6992	(lor)
+Mx 	91.8239
+T	86 76 87 w=10.0146	(sit)
+Mx 	101.8385
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	122.5221
+T	17 w=2.2900	(.)
+Mx 	128.2239
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	158.0370
+T	76 83 w=8.0078	(ip)
+Mx 	166.0448
+T	86 88 80 w=17.1924	(sum)
+Mx 	183.2372
+T	71 82 w=10.2295	(do)
+Mx 	193.4667
+T	79 82 85 w=11.6992	(lor)
+Mx 	205.1659
+T	86 76 87 w=10.0146	(sit)
+Mx 	215.1805
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	235.8641
+T	17 w=2.2900	(.)
+Mx 	241.5659
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	271.3790
+T	76 83 w=8.0078	(ip)
+Mx 	279.3868
+T	16 w=3.3691	(-)
+Mx 	14.8819
+My 	40.5447
+T	86 88 80 w=17.1924	(sum)
+Mx 	32.0743
+T	71 82 w=10.2295	(do)
+Mx 	42.3038
+T	79 82 85 w=11.6992	(lor)
+Mx 	54.0030
+T	86 76 87 w=10.0146	(sit)
+Mx 	64.0176
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	84.7012
+T	17 w=2.2900	(.)
+Mx 	88.8998
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	117.2097
+T	76 83 w=8.0078	(ip)
+Mx 	125.2175
+T	86 88 80 w=17.1924	(sum)
+Mx 	142.4099
+T	71 82 w=10.2295	(do)
+Mx 	152.6394
+T	79 82 85 w=11.6992	(lor)
+Mx 	164.3386
+T	86 76 87 w=10.0146	(sit)
+Mx 	174.3532
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	195.0368
+T	17 w=2.2900	(.)
+Mx 	199.2354
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	227.5453
+T	76 83 w=8.0078	(ip)
+Mx 	235.5531
+T	86 88 80 w=17.1924	(sum)
+Mx 	252.7455
+T	71 82 w=10.2295	(do)
+Mx 	262.9750
+T	79 82 85 w=11.6992	(lor)
+Mx 	274.6742
+T	86 76 87 w=10.0146	(sit)
+Mx 	284.6889
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	305.3724
+T	17 w=2.2900	(.)
+Mx 	14.8819
+My 	52.5447
+T	47 82 85 72 80 w=26.4014	(Lorem)
+Mx 	43.9433
+T	76 83 w=8.0078	(ip)
+Mx 	51.9511
+T	86 88 80 w=17.1924	(sum)
+Mx 	69.1435
+T	71 82 w=10.2295	(do)
+Mx 	79.3730
+T	79 82 85 w=11.6992	(lor)
+Mx 	91.0722
+T	86 76 87 w=10.0146	(sit)
+Mx 	101.0869
+T	68 80 72 87 w=20.6836	(amet)
+Mx 	121.7705
+T	17 w=2.2900	(.)
+End page
+Finish

tests/feat-unicode-softhyphen.sil

@@ -0,0 +1,16 @@
+\begin[papersize=a6]{document}
+\nofolios
+\neverindent
+% Language with hyphenation patterns
+% (so we are sure that the hyphenation comes from the soft hyphens)
+\set[parameter=document.language, value=und]
+% The text has soft hyphens U+00AD inside words.
+Lorem ip­sum­do­lor­sit­amet.
+Lorem ip­sum­do­lor­sit­amet.
+Lorem ip­sum­do­lor­sit­amet.% Should be hyphenated here as "ip-sum"
+
+\set[parameter=typesetter.softHyphen, value=false]
+Lorem ip­sum­do­lor­sit­amet.
+Lorem ip­sum­do­lor­sit­amet.
+Lorem ip­sum­do­lor­sit­amet.
+\end{document}