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With two entries of frequently encountered or obscured troubles so far: - "Categories with accented characters" Unicode NFC/NFD mismatch on Mac OS X (See #739) - `hugo new` aborts with cryptic EOF error (See #776)
49 lines
2.9 KiB
Markdown
49 lines
2.9 KiB
Markdown
---
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date: 2015-01-08T16:32:00-07:00
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menu:
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main:
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parent: troubleshooting
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title: Accented Categories
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weight: 10
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---
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## Trouble: Categories with accented characters
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One of my categories is named "Le-carré," but the link ends up being generated like this:
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categories/le-carr%C3%A9
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And not working. Is there an easy fix for this that I'm overlooking?
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## Solution
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Mac OS X user? If so, you are likely a victim of HFS Plus file system's insistence to store the "é" (U+00E9) character in Normal Form Decomposed (NFD) mode, i.e. as "e" + " ́" (U+0065 U+0301).
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`le-carr%C3%A9` is actually correct, `%C3%A9` being the UTF-8 version of U+00E9 as expected by the web server. Problem is, OS X turns [U+00E9] into [U+0065 U+0301], and thus `le-carr%C3%A9` no longer works. Instead, only `le-carre%CC%81` ending with `e%CC%81` would match that [U+0065 U+0301] at the end.
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This is unique to OS X. The rest of the world does not do this, and most certainly not your web server which is most likely running Linux. This is not a Hugo-specific problem either. Other people have been bitten by this when they have accented characters in their HTML files.
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Nor is this problem specific to Latin scripts. Japanese Mac users often run into the same issue, e.g. with `だ` decomposing into `た` and <code>゙</code>.[^1]
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Rsync 3.x to the rescue! From [an answer posted on Server Fault](http://serverfault.com/questions/397420/converting-utf-8-nfd-filenames-to-utf-8-nfc-in-either-rsync-or-afpd):
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> You can use rsync's `--iconv` option to convert between UTF-8 NFC & NFD, at least if you're on a Mac. There is a special `utf-8-mac` character set that stands for UTF-8 NFD. So to copy files from your Mac to your web server, you'd need to run something like:
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>
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> `rsync -a --iconv=utf-8-mac,utf-8 localdir/ mywebserver:remotedir/`
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>
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> This will convert all the local filenames from UTF-8 NFD to UTF-8 NFC on the remote server. The files' contents won't be affected.
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Please make sure you have the latest version rsync 3.x installed. The rsync that ships with OS X (even the latest 10.10 Yosemite) is the horribly old at version 2.6.9 protocol version 29. The `--iconv` flag is new in rsync 3.x.
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### References
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* http://discuss.gohugo.io/t/categories-with-accented-characters/505
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* [Converting UTF-8 NFD filenames to UTF-8 NFC, in either rsync or afpd](http://serverfault.com/questions/397420/converting-utf-8-nfd-filenames-to-utf-8-nfc-in-either-rsync-or-afpd) (Server Fault)
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* http://wiki.apache.org/subversion/NonNormalizingUnicodeCompositionAwareness
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* https://en.wikipedia.org/wiki/Unicode_equivalence#Example
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* http://zaiste.net/2012/07/brand_new_rsync_for_osx/
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* https://gogo244.wordpress.com/2014/09/17/drived-me-crazy-convert-utf-8-mac-to-utf-8/
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[^1]: As explained in the Japanese Perl Users article [Encode::UTF8Mac makes you happy while handling file names on MacOSX](http://perl-users.jp/articles/advent-calendar/2010/english/24).
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