Fix title splitting logic to account for both newlines and periods

features/core.feature

@@ -26,6 +26,18 @@ Feature: Basic reading and writing to a journal
             | There is a blank line above this.
             """
 
+    Scenario: Multiline entry with punctuation
+        Given we use the config "basic.yaml"
+        When we run "jrnl This is. the title\\n This is the second line"
+        and we run "jrnl -n 1"
+        Then the output should contain "This is. the title"
+
+    Scenario: Single line entry with punctuation
+        Given we use the config "basic.yaml"
+        When we run "jrnl This is. the title"
+        and we run "jrnl -n 1"
+        Then the output should contain "| the title"
+
     Scenario: Writing an entry from command line
         Given we use the config "basic.yaml"
         When we run "jrnl 23 july 2013: A cold and stormy day. I ate crisps on the sofa."

jrnl/util.py

@@ -33,11 +33,10 @@
     [\'\u2019\"\u201D]? # an optional right quote,
     [\]\)]*             # optional closing brackets and
     \s+                 # a sequence of required spaces.
-|                       # Otherwise,
-    \n                  # a sentence also terminates newlines.
 )""",
     re.VERBOSE,
 )
+SENTENCE_SPLITTER_ONLY_NEWLINE = re.compile("\n")
 
 
 class UserAbort(Exception):
@@ -263,7 +262,9 @@ def slugify(string):
 
 def split_title(text):
     """Splits the first sentence off from a text."""
-    punkt = SENTENCE_SPLITTER.search(text)
-    if not punkt:
-        return text, ""
-    return text[: punkt.end()].strip(), text[punkt.end() :].strip()
+    sep = SENTENCE_SPLITTER_ONLY_NEWLINE.search(text.lstrip())
+    if not sep:
+        sep = SENTENCE_SPLITTER.search(text)
+        if not sep:
+            return text, ""
+    return text[: sep.end()].strip(), text[sep.end() :].strip()