Fix GH-40 -- Syntax detector checking only the first line

Before this commit, if you didn't use any syntaxes in the first line of
a message but you used some in the following ones, botogram's syntax
detector didn't recognize anything in your message.

Author: Pietro Albini

botogram/syntaxes.py

@@ -35,14 +35,14 @@ def is_markdown(message):
     # Don't mark part of URLs or email addresses as Markdown
     message = utils.strip_urls(message)
 
-    return bool(_markdown_re.match(message))
+    return bool(_markdown_re.match(message.replace("\n", "")))
 
 
 def is_html(message):
     """Check if a string is actually HTML"""
     # Here URLs are not stripped because no sane URL contains HTML tags in it,
     # and for a few cases the speed penality is not worth
-    return bool(_html_re.match(message))
+    return bool(_html_re.match(message.replace("\n", "")))
 
 
 def guess_syntax(message, provided):

docs/changelog.rst

@@ -49,6 +49,8 @@ Bug fixes
 ---------
 
 * Fix the syntax detector checking URLs with dashes in the domain (`issue 32`_)
+* Fix the syntax detector checking only the first line of a message (`issue
+  40`_)
 * Fix inability to send messages to channels from a running bot (`issue 35`_)
 * Fix inability to download stickers (`issue 36`_)
 
@@ -63,6 +65,7 @@ Deprecated features will be removed in botogram 1.0!
 .. _issue 32: https://github.com/pietroalbini/botogram/issues/32
 .. _issue 35: https://github.com/pietroalbini/botogram/issues/35
 .. _issue 36: https://github.com/pietroalbini/botogram/issues/36
+.. _issue 40: https://github.com/pietroalbini/botogram/issues/40
 
 .. _changelog-0.1.2:
 

tests/test_syntaxes.py

@@ -17,9 +17,14 @@ def test_is_markdown():
     for delimiter in "*", "_", "`", "```":
         assert botogram.syntaxes.is_markdown(delimiter+"a"+delimiter)
         assert botogram.syntaxes.is_markdown("!"+delimiter+"a"+delimiter+"!")
+        assert botogram.syntaxes.is_markdown("a\n"+delimiter+"a"+delimiter)
+        assert botogram.syntaxes.is_markdown("a"+delimiter+"a\na"+delimiter)
 
     assert botogram.syntaxes.is_markdown("[a](b)")
     assert botogram.syntaxes.is_markdown("![a](b)!")
+    assert botogram.syntaxes.is_markdown("a\n[a](b)")
+    assert botogram.syntaxes.is_markdown("a[a\na](b)")
+    assert botogram.syntaxes.is_markdown("a[a](b\nb)")
 
     assert not botogram.syntaxes.is_markdown("hey@this_is_awesome.com")
     assert not botogram.syntaxes.is_markdown("https://www.this_is_awesome.com")
@@ -32,11 +37,16 @@ def test_is_html():
     for tag in "b", "strong", "i", "em", "pre", "code":
         assert botogram.syntaxes.is_html("<"+tag+">a</"+tag+">")
         assert botogram.syntaxes.is_html("!<"+tag+">a</"+tag+">!")
+        assert botogram.syntaxes.is_html("a\n<"+tag+">a</"+tag+">")
+        assert botogram.syntaxes.is_html("a<"+tag+">a\na</"+tag+">")
 
     assert not botogram.syntaxes.is_html("<a>a</a>")
     assert not botogram.syntaxes.is_html("<a test=\"b\">a</a>")
     assert botogram.syntaxes.is_html("<a href=\"b\">a</a>")
     assert botogram.syntaxes.is_html("!<a href=\"b\">a</a>!")
+    assert botogram.syntaxes.is_html("a\n<a href=\"b\">a</a>")
+    assert botogram.syntaxes.is_html("a<a href=\"b\">a\na</a>")
+    assert botogram.syntaxes.is_html("a<a href=\"b\nb\">a</a>")
 
 
 def test_guess_syntax():