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bugs - How to workaround failures with Unicode filepaths?


(Cross-posted on the Wolfram Community, reported to the support as [CASE:3965891].)


The Mathematica's Kernel and FrontEnd currently work well with Unicode file/directory paths, but some other components of the system contain long-standing bugs which are source of troubles for the users, especially for the users from non-English-speaking countries.


The most recent version of Mathematica 12.0 still fails to Import a PDF file when its path contains non-ASCII characters: under Windows Import returns $Failed, under OSX it returns empty list. This is due to a long-standing bug in the component "PDF.exe" which is responsible for importing of PDF files:


Export["Тест.pdf", ""]
Import[%]


"Тест.pdf"    
$Failed


The same is true for Importing Mathematica's native NB files as "Plaintext" due to a similar long-standing bug in "NBImport.exe":


Export["Тест.nb", ""]
Import[%, {"NB", "Plaintext"}]


"Тест.nb"
$Failed

The new in version 11 HTTPRequest/URLRead functionality also suffer from this bug. Here is an attempt to upload an image with non-ASCII filename to imgur.com using the method from this answer:



Export["Тест.png", Plot[Sin[x], {x, 0, Pi}]]

URLRead[HTTPRequest[
  "http://stackoverflow.com/upload/image", <|
   "Body" -> {"image" -> <|"Content" -> File[%], "MIMEType" -> "image/png"|>}|>]]

screenshot


And undoubtedly there are other components suffering from this bug because reports about problems with Unicode filepaths keep appearing on this site.


Hence it is worth to have a dedicated thread with a collection of general techniques allowing to workaround such problems. This thread is intended exactly for this purpose. Some guidelines:




  • When posting an OS-specific workaround, please include information about OS.

  • If a workaround is limited to local file paths and doesn't work for network paths, please mention this.

  • Each answer should contain elaborated description of only one general method along with its limitations.



Related questions:





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