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diff --git a/convert_links.py b/convert_links.py
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+''' Convert CamelCase links in a vimwiki to enclosing with double square
+bracket format.  Errs on the safe side by only converting CamelCase words that
+have a corresponding file. 
+
+Be very careful running this script.  Make a backup of your wiki before running
+it.  Run this on a copy of your wiki and then check you are happy with the
+conversions.  Carefully check the files and links that will be converted.
+
+Usage:
+    python convert_links.py wiki_directory
+
+Bugs:
+* TODO CamelCase links already wrapped in [[ will have additional [[ added
+* All instances of filenames will be converted in some cases this might be incorrect
+
+License: GPL3
+Author: Julian Ryde
+
+'''
+
+import sys
+import os
+
+def is_camelcase(s):
+    # works quite well but Camelcase returns true
+    return (s != s.lower()) and (s != s.upper())
+
+
+wiki_ext = '.wiki'
+basedir = sys.argv[1] # base directory of the wiki
+#outputdir = sys.argv[2]
+
+# generate dictionary of file names
+
+wiki_files = os.listdir(basedir)
+
+# select .wiki files
+wiki_files = [wiki_file[:-5] for wiki_file in wiki_files if wiki_file.endswith(wiki_ext)]
+wiki_files.sort()
+# remove ones that are not CamelCase better to be safe and change minimally
+wiki_links = [wiki_file for wiki_file in wiki_files if is_camelcase(wiki_file)]
+
+print '\nWiki files to be altered in', basedir
+print wiki_files
+
+print '\nLinks to be converted within these files'
+print wiki_links
+
+res = raw_input("\nIf you are happy with these changes press enter to continue.")
+
+
+# turn into set for fast membership query
+wiki_links = set(wiki_links)
+
+
+# for each wiki file find all instances of members of wiki_files in the file
+# contents and replace 
+for wiki_file in wiki_files:
+    fname = os.path.join(basedir, wiki_file + wiki_ext)
+    contents = open(fname).read()
+    # replace each wiki_link with the new form for this file
+    for wiki_link in wiki_links:
+        contents = contents.replace(wiki_link, '[[' + wiki_link + ']]')
+    # save modified contents
+    #print 'Saving', fname
+    open(fname, 'w').write(contents)