Fix invalid escape sequences in regex string literals.

Use raw strings for regex patterns in rmlist, transcheck, and contrib
scripts so Python 3 does not emit SyntaxWarning on invalid escapes.

Fixes #28

Author: jaredmauch

bin/rmlist

@@ -128,7 +128,7 @@ def main():
 
     # Remove any held messages for this list
     for filename in os.listdir(mm_cfg.DATA_DIR):
-        cre = re.compile('^heldmsg-%s-\d+\.(pck|txt)$' % re.escape(listname),
+        cre = re.compile(r'^heldmsg-%s-\d+\.(pck|txt)$' % re.escape(listname),
                          re.IGNORECASE)
         if cre.match(filename):
             REMOVABLES.append((os.path.join(mm_cfg.DATA_DIR, filename),

bin/transcheck

@@ -282,9 +282,9 @@ def check_file(translatedFile, originalFile, html=0, quiet=0):
        search also <MM-*> tags if html is not zero"""
 
     if html:
-        c = TransChecker("(%%|%\([^)]+\)[0-9]*[sd]|</?MM-[^>]+>)", "^%%$")
+        c = TransChecker(r"(%%|%\([^)]+\)[0-9]*[sd]|</?MM-[^>]+>)", "^%%$")
     else:
-        c = TransChecker("(%%|%\([^)]+\)[0-9]*[sd])", "^%%$")
+        c = TransChecker(r"(%%|%\([^)]+\)[0-9]*[sd])", "^%%$")
 
     try:
         f = open(originalFile)
@@ -328,7 +328,7 @@ def check_po(file, quiet=0):
     "scan the po file comparing msgids with msgstrs"
     n = 0
     p = POParser(file)
-    c = TransChecker("(%%|%\([^)]+\)[0-9]*[sdu]|%[0-9]*[sdu])", "^%%$")
+    c = TransChecker(r"(%%|%\([^)]+\)[0-9]*[sdu]|%[0-9]*[sdu])", "^%%$")
     while p.parse():
         if p.msgstr:
             c.reset()
@@ -364,8 +364,8 @@ def main():
 
     lang = args[0]
 
-    isHtml = re.compile("\.html$");
-    isTxt = re.compile("\.txt$");
+    isHtml = re.compile(r"\.html$");
+    isTxt = re.compile(r"\.txt$");
 
     numerrors = 0
     numfiles = 0

contrib/check_perms_grsecurity.py

@@ -157,9 +157,9 @@ class CheckFixUid:
         except ValueError:
             file.insert(file.index("import paths\n")+1, "import CheckFixUid\n")
             for i in range(len(file)-1, 0, -1):
-                object=re.compile("^([   ]*)main\(").search(file[i])
+                object=re.compile(r"^([   ]*)main\(").search(file[i])
                 # Special hack to support patching of update
-                object2=re.compile("^([     ]*).*=[      ]*main\(").search(file[i])
+                object2=re.compile(r"^([     ]*).*=[      ]*main\(").search(file[i])
                 if object:
                     print("Patching " + script)
                     file.insert(i,

contrib/courier-to-mailman.py

@@ -80,9 +80,9 @@ def main():
         listname = string.lower(local)
         types = (("-admin$", "admin"),
                          ("-bounces$", "bounces"),
-                         ("-bounces\+.*$", "bounces"),          # for VERP
+                         (r"-bounces\+.*$", "bounces"),          # for VERP
                          ("-confirm$", "confirm"),
-                         ("-confirm\+.*$", "confirm"),
+                         (r"-confirm\+.*$", "confirm"),
                          ("-join$", "join"),
                          ("-leave$", "leave"),
                          ("-owner$", "owner"),