Changed rules for forced Scene Headings (slugs).

Double linebreaks no longer signify a slug.
Instead you can force one with a leading period:

e.g.

FADE IN:

.DARKNESS

(whatever that would look like!?)

2 files changed, 22 insertions, 7 deletions

diff --git a/screenplain/parsers/spmd.py b/screenplain/parsers/spmd.py
index 2c552e9..0c7ef19 100644
--- a/screenplain/parsers/spmd.py
+++ b/screenplain/parsers/spmd.py
@@ -30,12 +30,18 @@ preprocess_re = re.compile(r'^([ \t]*)(.*?)([ \t]*)[\r\n]*$')
 def is_slug(blanks_before, line_list):
     if len(line_list) != 1:
         return False
-    if blanks_before >= 2:
-        return True
     upper = line_list[0].upper()
+    if upper.startswith('.') and len(upper) > 1:
+        return True
     return any(upper.startswith(s) for s in slug_prefixes)
 
 
+def _create_slug(line):
+    if line.startswith('.') and len(line) > 1:
+        line = line[1:]
+    return Slug(_to_rich([line])[0])
+
+
 def _create_dialog(line_list):
     dual_index = None
     try:
@@ -66,7 +72,7 @@ def _to_rich(line_list):
 def create_paragraph(blanks_before, line_list):
     first_line = line_list[0]
     if is_slug(blanks_before, line_list):
-        return Slug(_to_rich(line_list)[0])
+        return _create_slug(line_list[0])
     elif all(centered_re.match(line) for line in line_list):
         return Action(_to_rich(
             centered_re.match(line).group(1) for line in line_list
diff --git a/tests/spmd_test.py b/tests/spmd_test.py
index 52b2348..34fddf7 100644
--- a/tests/spmd_test.py
+++ b/tests/spmd_test.py
@@ -43,14 +43,24 @@ class ParseTests(unittest2.TestCase):
         ]))
         self.assertEquals([Action], [type(p) for p in paras])
 
-    def test_two_lines_creates_a_slug(self):
+    def test_two_lines_creates_no_slug(self):
         types = [type(p) for p in parse([
             '',
             '',
             'This is a slug',
             '',
         ])]
-        self.assertEquals([Slug], types)
+        # This used to be Slug. Changed in the Jan 2012 version of the spec.
+        self.assertEquals([Action], types)
+
+    def test_period_creates_slug(self):
+        paras = parse([
+            '.SNIPER SCOPE POV',
+            '',
+        ])
+        self.assertEquals(1, len(paras))
+        self.assertEquals(Slug, type(paras[0]))
+        self.assertEquals(plain('SNIPER SCOPE POV'), paras[0].line)
 
     # A Character element is any line entirely in caps, with one empty
     # line before it and without an empty line after it.
@@ -196,8 +206,7 @@ class ParseTests(unittest2.TestCase):
             '',
             '> FADE OUT.',
             '',
-            '',
-            'DARKNESS',
+            '.DARKNESS',
         ]))
         self.assertEquals([Action, Transition, Slug], [type(p) for p in paras])
         self.assertEquals(plain('FADE OUT.'), paras[1].line)