Add a Txt2tags test case for titles

This is simply extracted from the rules.t2t test, but with unique title
content as the tagmanager removes duplicate tags in tags files.

tests/ctags/Makefile.am

@@ -248,6 +248,7 @@ test_sources = \
 	test.vhd						\
 	test_input.rs					\
 	test_input2.rs					\
+	titles.t2t						\
 	traffic_signal.v				\
 	traits.php						\
 	union.f							\

tests/ctags/titles.t2t

@@ -0,0 +1,40 @@
+
+% from rules.t2t, with unique title content as our output removed
+% duplicate tags (even with different scopes)
+
+
+%%% Syntax: Balanced equal signs (from 1 to 5)
+= First Title Level 1 =
+== First Title Level 2 ==
+=== First Title Level 3 ===
+==== First Title Level 4 ====
+===== First Title Level 5 =====
+%%% Label: Between brackets, alphanumeric [A-Za-z0-9_-]
+= Second Title Level 1 =[lab_el-1]
+== Second Title Level 2 ==[lab_el-2]
+=== Second Title Level 3 ===[lab_el-3]
+==== Second Title Level 4 ====[lab_el-4]
+===== Second Title Level 5 =====[lab_el-5]
+%%% Syntax: Spaces around and/or inside are allowed (and ignored)
+     ===Third Title Level 3===    
+    === Fourth Title Level 3 ===    
+   ===  Fifth Title Level 3  ===   
+===     Sixth Title Level 3      ===
+===          Seventh Title Level 3 ===
+   ===  Eighth Title Level 3  ===[lab_el-9]   
+%%% Invalid: Unbalanced equal signs
+      =First Not Title
+
+     ==Second Not Title=
+
+    ===Third Not Title====
+%%% Invalid: Level deeper than 5
+ ======First Not Title 6======
+
+=======First Not Title 7=======
+%%% Invalid: Space between title and label
+=Fourth Not Title= [label1]
+%%% Invalid: Space inside label
+=Fifth Not Title=[ label ]
+%%% Invalid: Strange chars inside label
+=Sixth Not Title=[la/bel]

tests/ctags/titles.t2t.tags

@@ -0,0 +1,17 @@
+# format=tagmanager
+Eighth Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+Fifth Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+First Title Level 1Ì64Ö0
+First Title Level 2Ì64ÎFirst Title Level 1Ö0
+First Title Level 3Ì64ÎFirst Title Level 1First Title Level 2Ö0
+First Title Level 4Ì64ÎFirst Title Level 1First Title Level 2First Title Level 3Ö0
+First Title Level 5Ì64ÎFirst Title Level 1First Title Level 2First Title Level 3First Title Level 4Ö0
+Fourth Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+Second Title Level 1Ì64Ö0
+Second Title Level 2Ì64ÎSecond Title Level 1Ö0
+Second Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+Second Title Level 4Ì64ÎSecond Title Level 1Second Title Level 2Second Title Level 3Ö0
+Second Title Level 5Ì64ÎSecond Title Level 1Second Title Level 2Second Title Level 3Second Title Level 4Ö0
+Seventh Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+Sixth Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0
+Third Title Level 3Ì64ÎSecond Title Level 1Second Title Level 2Ö0