Remove periods from url using .htaccess - apache

Question

I've seen variations of this question around, but I couldnt make it work for me.
My problem is: I have many urls indexed at google where the address has one ore more periods. Ex: http://partiturapara.com.br/15-sheets/809-some-music-enc.4.5
Of course the URL does not work, because Apache thinks it is a extension, so I have to strip them, to leave something like this:
http://partiturapara.com.br/15-sheets/809-some-music-enc45
I have a few .htacces lines that make things work (I use joomla) that I will show them bellow.
I´ve tried the following:
RewriteRule ^([^/]*)\.([^/]*)\.$ /$1$2 [L,R=301] - But it just keep loading for ever
and also tried:
RewriteRule ^([^/]*)\.$ /$1 [NC] - This almost works, but gets terrible slow and url will not finish loading.
If you could at least point me in the right direction it would be amazing, cause I already spent lots and lots of hours trying to figure out how all these lines works together and its been very frustrating.
My actual rewrite at the .htaccess file:
RewriteEngine On
RewriteCond %{QUERY_STRING} base64_encode[^(]*\([^)]*\) [OR]
RewriteCond %{QUERY_STRING} (|%3E) [NC,OR]
RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR]
RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2})
RewriteRule .* index.php [F]
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteCond %{REQUEST_URI} !^/index\.php
RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# ----- The line I inserted ------
RewriteRule ^([^/]*)\.$ /$1 [NC]
#-------My edit end --------------
RewriteRule .* index.php [L]
EDIT 1
----------------- UPDATE AFTER JON´S SUGGESTION (it didnt work)----------------------
Hi,
After Jon suggestion, I am trying to figure out yet how my htaccess files works. This way I removed all lines in a way the website still works. The Line Jon suggested seems to be ignored. This is minimum .htaccess I got:
RewriteEngine On
------ this is the line Jon suggested me -----
RewriteRule ^(.*)\.([^/]*)\.$ /$1$2 [L,R=301]
------ end line Jon sugested -----------------
RewriteCond %{REQUEST_URI} /component/|(/[^.]*|\.(php|html?|feed|pdf|vcf|raw))$ [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule .* index.php [L]
As I said, the website navigates normally, except when it finds the "dot" in the URL, so it returns the error:
Not Found
The requested URL /15-partituras/1046-sentimental-o.d.m-v-choro was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Perhaps I misunderstood something?
Thanks again!

Answer 1

You don't want to insert that rule there. You've completely usurped the very necessary conditions that need to be applied to the index.php routing rule. RewriteCond's only apply to the immediately following rule.
Try adding this right below RewriteEngine On:
RewriteRule ^(.*)\.([^/]*)\.$ /$1$2 [L,R=301]