Fix #1256.

Reduce TeraTerm.analyze_text score to 0.01. This resolves the
conflict with Turtle, but doesn't take over nearly all other
languages.

Added a test as provided in the bug report to ensure this won't
regress again.

2 files changed, 21 insertions, 1 deletions

diff --git a/tests/test_cpp.py b/tests/test_cpp.py
index b87b2dd3..a3ef33a3 100644
--- a/tests/test_cpp.py
+++ b/tests/test_cpp.py
@@ -9,9 +9,11 @@
 
 import pytest
 
-from pygments.lexers import CppLexer
+from pygments.lexers import CppLexer, CLexer
 from pygments.token import Token
 
+from pygments.lexers import guess_lexer
+
 
 @pytest.fixture(scope='module')
 def lexer():
@@ -33,3 +35,21 @@ def test_open_comment(lexer):
         (Token.Comment.Multiline, u'/* foo\n'),
     ]
     assert list(lexer.get_tokens(fragment)) == tokens
+
+def test_guess_c_lexer():
+    code = '''
+    #include <stdio.h>
+    #include <stdlib.h>
+
+    int main(void);
+
+    int main(void) {
+        uint8_t x = 42;
+        uint8_t y = x + 1;
+
+        /* exit 1 for success! */
+        return 1;
+    }
+    '''
+    lexer = guess_lexer(code)
+    assert isinstance(lexer, CLexer)
\ No newline at end of file
diff --git a/tests/test_guessing.py b/tests/test_guessing.py
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/tests/test_guessing.py