1Testing av_get_token()
2|''| -> || + ||
3|| -> || + ||
4|:| -> || + |:|
5|\| -> |\| + ||
6|'| -> || + ||
7|    ''    :| -> || + |:|
8|    ''  ''  :| -> |  | + |:|
9|foo   '' :| -> |foo   | + |:|
10|'foo'| -> |foo| + ||
11|foo     | -> |foo| + ||
12|  '  foo  '  | -> |  foo  | + ||
13|foo\| -> |foo\| + ||
14|foo':  blah:blah| -> |foo:  blah:blah| + ||
15|foo\:  blah:blah| -> |foo:  blah| + |:blah|
16|foo'| -> |foo| + ||
17|'foo :  '  :blahblah| -> |foo :  | + |:blahblah|
18|\ :blah| -> | | + |:blah|
19|     foo| -> |foo| + ||
20|      foo       | -> |foo| + ||
21|      foo     \ | -> |foo      | + ||
22|foo ':blah| -> |foo :blah| + ||
23| foo   bar    :   blahblah| -> |foo   bar| + |:   blahblah|
24|\f\o\o| -> |foo| + ||
25|'foo : \ \  '   : blahblah| -> |foo : \ \  | + |: blahblah|
26|'\fo\o:': blahblah| -> |\fo\o:| + |: blahblah|
27|\'fo\o\:':  foo  '  :blahblah| -> |'foo::  foo  | + |:blahblah|
28