Split man.test to make tests pass without oniguruma (#2722)

docs/build_mantests.py

@@ -1,13 +1,21 @@
 #!/usr/bin/env python3
 import yaml
+import re
 
-with open("content/manual/manual.yml") as f:
-    manual = yaml.safe_load(f)
+regex_program_pattern = re.compile(
+    r'\b(?:test|match|capture|scan|split|splits|sub|gsub)\s*\(')
+
+with open('content/manual/manual.yml') as source, \
+        open('../tests/man.test', 'w') as man, \
+        open('../tests/manonig.test', 'w') as manonig:
+    manual = yaml.safe_load(source)
     for section in manual.get('sections', []):
         for entry in section.get('entries', []):
             for example in entry.get('examples', []):
-                print(example.get('program', '').replace('\n', ' '))
-                print(example.get('input', ''))
+                program = example.get('program', '').replace('\n', ' ')
+                out = manonig if regex_program_pattern.search(program) else man
+                print(program, file=out)
+                print(example.get('input', ''), file=out)
                 for s in example.get('output', []):
-                    print(s)
-                print('')
+                    print(s, file=out)
+                print('', file=out)