change to run on python 3.13

Author: aupfred

abc_search.py

@@ -9,8 +9,10 @@
                r'\%\%beginps(.|\s)+?\%\%endps',  # remove embedded postscript
                r'\%\%begintext(.|\s)+?\%\%endtext',   # remove text
                r'\[\w:.*?\]',    # remove embedded fields
-               r'(?m)^\w:.*?$',  # remove normal fields
-               r'(?m)%.*$',      # remove comments
+               #r'(?m)^\w:.*?$',  # remove normal fields
+               r'^\w:.*?$',  # remove normal fields
+               #r'(?m)%.*$',      # remove comments
+               r'%.*$',      # remove comments
                r'\[\w:.*?\]',    # remove embedded fields
                r'\\"',           # remove escaped " characters
                r'".*?"',         # remove strings
@@ -19,7 +21,7 @@
                r'!.+?!',         # remove ornaments like eg. !pralltriller!
                r'\+.+?\+',       # remove ornaments like eg. +pralltriller+
                r'\{.*?\}',       # remove grace notes
-               ]))
+               ]), flags=re.M)
 
 def remove_non_note_fragments(abc):
     # replace non-note fragments of the text by replacing them by spaces (thereby preserving offsets), but keep also bar and repeat symbols

tune_elements.py

@@ -1081,7 +1081,7 @@ class AbcStructure(object):
     @staticmethod
     def get_sections(cwd):
         # [1.3.6.2 [JWDJ] bugfix This fixes 'str>ng' in Fields and Command Reference
-        reference_content = io.open(os.path.join(cwd, 'reference.txt'), 'rU', encoding='latin-1').read()
+        reference_content = io.open(os.path.join(cwd, 'reference.txt'), 'r', encoding='latin-1').read()
         if AbcStructure.replace_regexes is None:
             AbcStructure.replace_regexes = [
                 (re.compile(r'\bh((?:bass/chord|length|logical|string|int|fl-?\n?oat\s?|command|str|text|vol|h|n|char|clef|bass|chord)\d*\s?(?: (?:string|int|float)\d*?)*)i\b'), r'<\1>'),  # enclose types with < and >