.htaccess - 如何将大写和重音字母重定向到url中的非重音小写？

Question

I use the RewriteEngine with the following htaccess rules to remove accented and capitalized letters from urls:

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(A|Á|á|Â|â|Æ|æ|À|à|Å|å|Ã|ã|Ä|ä)(.*?)$
RewriteRule . %1a%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(B)(.*?)$
RewriteRule . %1b%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(C|Ç|ç)(.*?)$
RewriteRule . %1c%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(D)(.*?)$
RewriteRule . %1d%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(E|É|é|Ê|ê|È|è|Ð|ð|Ë|ë)(.*?)$
RewriteRule . %1e%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(F)(.*?)$
RewriteRule . %1f%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(G)(.*?)$
RewriteRule . %1g%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(H)(.*?)$
RewriteRule . %1h%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(I|Í|í|Î|î|Ì|ì|Ï|ï)(.*?)$
RewriteRule . %1i%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(J)(.*?)$
RewriteRule . %1j%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(K)(.*?)$
RewriteRule . %1k%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(L)(.*?)$
RewriteRule . %1l%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(M)(.*?)$
RewriteRule . %1m%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(N|Ñ|ñ)(.*?)$
RewriteRule . %1n%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(O|Ó|ó|Ô|ô|Œ|œ|Ò|ò|Ø|ø|Õ|õ|Ö|ö)(.*?)$
RewriteRule . %1o%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(P|ß|Þ|þ)(.*?)$
RewriteRule . %1p%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(Q)(.*?)$
RewriteRule . %1q%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(R)(.*?)$
RewriteRule . %1r%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(S)(.*?)$
RewriteRule . %1s3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(T)(.*?)$
RewriteRule . %1t%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(U|Ú|ú|Û|û|Ù|ù|Ü|ü)(.*?)$
RewriteRule . %1u%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(V)(.*?)$
RewriteRule . %1v%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(W)(.*?)$
RewriteRule . %1w%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(X)(.*?)$
RewriteRule . %1x%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(Y|Ý|ý|Ÿ|ÿ)(.*?)$
RewriteRule . %1y%3 [R=301,L]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteCond %{REQUEST_URI} ^(.*?)(Z)(.*?)$
RewriteRule . %1z%3 [R=301,L]

How can I improve or make this code shorter whitout using RewriteMap or mod_speling as suggested in this reference: http://www.askapache.com/htaccess/rewrite-uppercase-lowercase.html

UPDATE ANSWER According to Samurai8's answer I have set an environment variable in order to prepare all changes first and redirect at the end. Here is the htaccess save as UTF-8:

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(A|Á|á|Â|â|Æ|æ|À|à|Å|å|Ã|ã|Ä|ä)(.*)$ $1a$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(B)(.*)$ $1b$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(C|Ç|ç)(.*)$ $1c$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(C|Ç|ç)(.*)$ $1c$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(D)(.*)$ $1d$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(E|É|é|Ê|ê|È|è|Ð|ð|Ë|ë)(.*)$ $1e$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(F)(.*)$ $1f$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(G)(.*)$ $1g$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(H)(.*)$ $1h$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(I|Í|í|Î|î|Ì|ì|Ï|ï)(.*)$ $1i$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(J)(.*)$ $1j$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(K)(.*)$ $1k$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(L)(.*)$ $1l$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(M)(.*)$ $1m$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(N|Ñ|ñ)(.*)$ $1n$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(O|Ó|ó|Ô|ô|Œ|œ|Ò|ò|Ø|ø|Õ|õ|Ö|ö)(.*)$ $1o$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(P|ß|Þ|þ)(.*)$ $1p$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(Q)(.*)$ $1q$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(R)(.*)$ $1r$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(S)(.*)$ $1s$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(T)(.*)$ $1t$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(U|Ú|ú|Û|û|Ù|ù|Ü|ü)(.*)$ $1u$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(V)(.*)$ $1v$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(W)(.*)$ $1w$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(X)(.*)$ $1x$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(Y)(.*)$ $1y$3 [E=Redirect:1,N,R=301]
RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(Z)(.*)$ $1z$3 [E=Redirect:1,N,R=301]
RewriteCond %{ENV:Redirect} =1
RewriteRule ^ - [R,L,E=!Redirect]

HELPFUL REFERENCES

• http://www.askapache.com/htaccess/rewrite-uppercase-lowercase.html

• https://superuser.com/questions/28779/how-do-i-find-the-encoding-of-the-current-buffer-in-vim

• French characters with rewrite rule

Answer 1

The way I got it to work is by saving the .htaccess file as utf-8. An explanation on how to do that can be found here for vim. If you use an other editor, you'll need to search a bit. If the .htaccess file isn't saved as an utf-8 file, but as an ascii file instead, the RewriteRules will leave 'strange characters'. localhost/à would be rewritten to localhost/a¡ for example. I can only guess the reason for that, but I assume this is because Apache assumes strings to have an other character encoding than they actually have.

If everything works as expected, you can change [R] to [R=301] to make the redirect permanent. Permanent redirects are cached by the browser, reducing the load on the server for future requests, but they mess up rewrites if you are still testing, because an old rewrite could be cached.

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(Á|á|Â|â|Æ|æ|À|à|Å|å|Ã|ã|Ä|ä|A)(.*)$ $1a$3 [E=Redirect:1,N,R]

RewriteCond %{REQUEST_METHOD}  !=POST
RewriteRule ^(.*)(B)(.*)$ $1b$3 [E=Redirect:1,N,R]

#etc...

RewriteCond %{ENV:Redirect} =1
RewriteRule ^ - [R,L,E=!Redirect]