refactor multi-line-to-line normalisation to utils.parse.line_normalise(), use it in rss.py

closes #174

modules/rss.py

@@ -18,7 +18,8 @@ class Module(ModuleManager.BaseModule):
             self.bot.get_setting("rss-interval", RSS_INTERVAL))
 
     def _format_entry(self, server, feed_title, entry, shorten):
-        title = utils.http.strip_html(entry["title"])
+        title = utils.parse.line_normalise(utils.http.strip_html(
+            entry["title"]))
 
         author = entry.get("author", None)
         author = " by %s" % author if author else ""

modules/tweets/format.py

@@ -7,11 +7,7 @@ def _timestamp(dt):
     return "%s %s ago" % (since, unit)
 
 def _normalise(tweet):
-    while "  " in tweet:
+    return html.unescape(utils.parse.line_normalise(tweet))
-        tweet = tweet.replace("  ", " ")
-    lines = [line.strip() for line in tweet.split("\n")]
-    lines = list(filter(None, lines))
-    return html.unescape("  ".join(lines))
 
 def _tweet(exports, server, tweet, from_url):
     linked_id = tweet.id

src/utils/parse.py

@@ -1,4 +1,5 @@
 import io, typing
+from src import utils
 
 COMMENT_TYPES = ["#", "//"]
 def hashflags(filename: str
@@ -79,3 +80,7 @@ def try_int(s: str) -> typing.Optional[int]:
         return int(s)
     except ValueError:
         return None
+
+def line_normalise(s: str) -> str:
+    lines = list(filter(None, [line.strip() for line in s.split("\n")]))
+    return "  ".join(line.replace("  ", " ") for line in lines)