Fix CBM BASIC V2 analyze text logic (#1607)

pygments/lexers/basic.py

@@ -351,10 +351,10 @@ class CbmBasicV2Lexer(RegexLexer):
         ]
     }
 
-    def analyse_text(self, text):
+    def analyse_text(text):
         # if it starts with a line number, it shouldn't be a "modern" Basic
         # like VB.net
-        if re.match(r'\d+', text):
+        if re.match(r'^\d+', text):
             return 0.2
 
 

pygments/lexers/forth.py

@@ -174,4 +174,4 @@ def analyse_text(text):
         """Forth uses : COMMAND ; quite a lot in a single line, so we're trying
         to find that."""
         if re.search('\n:[^\n]+;\n', text):
-            return 0.1
+            return 0.3

tests/test_guess.py

@@ -11,6 +11,8 @@
 import pytest
 
 from pygments.lexers import guess_lexer, get_lexer_by_name
+from pygments.lexers.basic import CbmBasicV2Lexer
+from pygments.lexers.ecl import ECLLexer
 
 TESTDIR = Path(__file__).resolve().parent
 
@@ -166,3 +168,17 @@ def test_guess_c_lexer():
     '''
     lexer = guess_lexer(code)
     assert lexer.__class__.__name__ == 'CLexer'
+
+
+def test_cbmbasicv2_analyse_text():
+    text = "10 PRINT \"PART 1\""
+    res = CbmBasicV2Lexer.analyse_text(text)
+    assert res == 0.2
+
+
+def test_ecl_analyze_text():
+    text = r"""
+            STRING  ABC -> size32_t lenAbc, const char * abc;
+            """
+    res = ECLLexer.analyse_text(text)
+    assert res == 0.01