Issue 4811/2: convert-ly rule for nicer beatStructure syntax

1 files changed, 17 insertions, 0 deletions

diff --git a/python/convertrules.py b/python/convertrules.py
index 9de1256783..3e43a28133 100644
--- a/python/convertrules.py
+++ b/python/convertrules.py
@@ -3871,6 +3871,23 @@ def conv(str):
     str = re.sub (r"#'whiteout-box(?![a-z_-])\b", r"#'whiteout", str)
     return str
 
+@rule ((2, 19, 40), r"\time #'(2 3) ... -> \time 2,3 ...")
+def conv (str):
+    def repl (m):
+        return m.group(1) + re.sub (r"\s+", ",", m.group (2))
+
+    str = re.sub (r"(beatStructure\s*=\s*)#'\(([0-9]+(?:\s+[0-9]+)+)\)",
+                  repl, str)
+
+    str = re.sub (r"(\\time\s*)#'\(([0-9]+(?:\s+[0-9]+)+)\)", repl, str)
+    def repl (m):
+        subst = re.sub (r"\s+", ",", m.group (1))
+        return subst + (4 + len (m.group (1)) - len (subst)) * " " + m.group (2)
+
+    str = re.sub (r"#'\(([0-9]+(?:\s+[0-9]+)+)\)(\s+%\s*beatStructure)",
+                  repl, str)
+    return str
+
 # Guidelines to write rules (please keep this at the end of this file)
 #
 # - keep at most one rule per version; if several conversions should be done,