我使用RewriteRule用下划线替换我的URL中的所有空格（又名％20）：
RewriteRule (.*)[\ ](.*) $1_$2 [N]
[N]标志再次开始重写过程，直到没有剩余空间（希望如此）。现在，当一个文件在另一边等待时，一切都很顺利，即请求：
/This is an example.html
和文件：
This_is_an_example.html
但是当没有匹配的文件时，Apache会以500内部错误退出。错误日志表示段错误，重写日志显示重写引擎疯狂尝试重定向到
/This is an_example.html/This is an_example.html/This is an_example.html/...
等等，直到segfault（注意， last 空间被转换，但没有其他）。
有没有人知道，为什么RewriteRule在为现有文件工作时会如此悲惨地失败？
更新：只有在请求的URI中有额外的“/”时才会发生段错误，例如
/virtual-directory/This is an example.html
更新2：此声明中有否 RewriteCond。在我看来，它应该没有。问题是，为什么不呢。 htaccess的：
RewriteEngine On
RewriteBase /test/
RewriteRule (.*)[\ ](.*) $1_$2 [N]
更新3：有问题的.htaccess文件：
AddType application/xhtml+xml .xhtml
AddEncoding x-gzip .gz
ExpiresActive On
ExpiresByType application/xhtml+xml "access plus 1 year"
ErrorDocument 404 /test/index.php?error=404
RewriteEngine On
RewriteBase /test/
# replace spaces with underscores
RewriteCond %{REQUEST_FILENAME} .*[\ ].*
RewriteRule (.*)[\ ](.*) $1_$2 [N]
# the index.php
RewriteRule ^index.php - [L]
# language tag
RewriteRule ^([a-z]{2})$ index.php?lang=$1&url= [L,QSA]
RewriteRule ^$ en [R=301,L]
# add .xhtml
RewriteCond %{REQUEST_FILENAME}.xhtml -s [OR]
RewriteCond %{REQUEST_FILENAME}.xhtml.gz -s
RewriteRule ^(.+) $1.xhtml
# add .gz
RewriteCond %{HTTP:Accept-Encoding} .*gzip.*
RewriteCond %{REQUEST_FILENAME}.gz -s
RewriteRule ^(.+) $1.gz
# send correct mime type
#RewriteCond %{REQUEST_FILENAME} -s
RewriteRule \.xhtml\.gz$ - [L,T=application/xhtml+xml]
rewriteLog语句太大而无法粘贴。单个请求用13MB的数据填充文件。这是摘要：
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add path info postfix: /htdocs/test/de -> /htdocs/test/de/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] strip per-dir prefix: /htdocs/test/de/This is a test -> de/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] applying pattern '(.*)[\ ](.*)' to uri 'de/This is a test'
(IP) - - [date] [host] (2) [perdir /htdocs/test/] rewrite 'de/This is a test' -> 'de/This is a_test'
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add per-dir prefix: de/This is a_test -> /htdocs/test/de/This is a_test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add path info postfix: /htdocs/test/de/This is a_test -> /htdocs/test/de/This is a_test/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] strip per-dir prefix: /htdocs/test/de/This is a_test/This is a test -> de/This is a_test/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] applying pattern '(.*)[\ ](.*)' to uri 'de/This is a_test/This is a test'
(IP) - - [date] [host] (2) [perdir /htdocs/test/] rewrite 'de/This is a_test/This is a test' -> 'de/This is a_test/This is a_test'
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add per-dir prefix: de/This is a_test/This is a_test -> /htdocs/test/de/This is a_test/This is a_test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add path info postfix: /htdocs/test/de/This is a_test/This is a_test -> /htdocs/test/de/This is a_test/This is a_test/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] strip per-dir prefix: /htdocs/test/de/This is a_test/This is a_test/This is a test -> de/This is a_test/This is a_test/This is a test
(IP) - - [date] [host] (3) [perdir /htdocs/test/] applying pattern '(.*)[\ ](.*)' to uri 'de/This is a_test/This is a_test/This is a test'
(IP) - - [date] [host] (2) [perdir /htdocs/test/] rewrite 'de/This is a_test/This is a_test/This is a test' -> 'de/This is a_test/This is a_test/This is a_test'
(IP) - - [date] [host] (3) [perdir /htdocs/test/] add per-dir prefix: de/This is a_test/This is a_test/This is a_test -> /htdocs/test/de/This is a_test/This is a_test/This is a_test
... and so on ad infinitum
坏人是第6行：“添加路径信息后缀”。
答案 0 :(得分：2)
<强>更新
查看更新3 （有用，谢谢），我想到了另外两个想法：
有一个apache问题：mod_rewrite adds path info postfix after a substitution occured，看起来与你的相似。这是fixed in 2.2.12引入的discardpathinfo|DPI RewriteRule flag。尝试将此标记添加到RewriteRule：
RewriteRule (.*)[\ ](.*) $1_$2 [N,DPI]
看看是否能解决问题。需要apache 2.2.12。
您是否恰好mod_dir启用了DirectorySlash On？尝试禁用它。
更新结束
您的设置：
RewriteEngine on
RewriteCond %{REQUEST_FILENAME} .*[\ ].*
RewriteRule (.*)[\ ](.*) $1_$2 [N]
适合我（http://localhost/test/This is an example.html，在VirtualHost config，apache 2.2.14中重写规则。这是我的RewriteLog（RewriteLogLevel 2}：
init rewrite engine with requested uri /test/This is an example.html
rewrite '/test/This is an example.html' -> '/test/This is an_example.html'
rewrite '/test/This is an_example.html' -> '/test/This is_an_example.html'
rewrite '/test/This is_an_example.html' -> '/test/This_is_an_example.html'
local path result: /test/This_is_an_example.html
prefixed with document_root to D:/var/www/test/This_is_an_example.html
go-ahead with D:/var/www/test/This_is_an_example.html [OK]
当D:/var/www/test/This_is_an_example.html不存在时，我得到404 - 但没有段错误。
RewriteLog吗？你把重写规则放在哪里？变成.htaccess？你有任何指令（AliasMatch等）也适用于你的网址吗？
答案 1 :(得分：0)
尝试绝对替代：
RewriteRule ^([^\ ]*)\ (.*) /$1_$2 [N]
答案 2 :(得分：0)
总的来说，如果提供可重复的测试用例，Apache开发人员将非常认真地对待httpd中的SIGSEGV。如果您附加调试器并捕获回溯，则更是如此。