Redmine

I have a little problem with my .htaccess file ( I overwritten it by mistake and I don't know how it was configured before, because someone else did it long time ago ), so I can't access any page of my Redmine app because of 500 Internal Server Error.

What I know (or I think I know) is that my .htaccess file should point to Redmine public folder.

My folder structure is something like this:

home/domain/public_html/.htaccess
home/domain/public_html/redmine/public/

So, my Redmine app is in subfolder on my server and I really dont know how I should configure my .htacces that it will point on my app files ( it was configured like that before). I have only overwrite .htaccess in "home/domain/public_html/.htaccess" file by mistake,other files in "home/domain/public_html/redmine" folder are untouched.

At the moment my .htaccess file after few tries looks like example file in redmine files

# General Apache options
<IfModule mod_fastcgi.c>
AddHandler fastcgi-script .fcgi
</IfModule>
<IfModule mod_fcgid.c>
AddHandler fcgid-script .fcgi
</IfModule>
Options +FollowSymLinks +ExecCGI

# If you don't want Rails to look in certain directories,
# use the following rewrite rules so that Apache won't rewrite certain requests
#
# Example:
# RewriteCond %{REQUEST_URI} ^/notrails.*
# RewriteRule .* - [L]

# Redirect all requests not available on the filesystem to Rails
# By default the cgi dispatcher is used which is very slow
#
# For better performance replace the dispatcher with the fastcgi one
#
# Example:
# RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
RewriteEngine On

# If your Rails application is accessed via an Alias directive,
# then you MUST also set the RewriteBase in this htaccess file.
#
# Example:
# Alias /myrailsapp /path/to/myrailsapp/public
# RewriteBase /myrailsapp

RewriteRule ^$ index.html [QSA]
RewriteRule ^([^.]+)$ $1.html [QSA]
RewriteCond %{REQUEST_FILENAME} !-f
<IfModule mod_fastcgi.c>
RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
</IfModule>
<IfModule mod_fcgid.c>
RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]
</IfModule>

# In case Rails experiences terminal errors
# Instead of displaying this message you can supply a file here which will be rendered instead
#
# Example:
# ErrorDocument 500 /500.html

ErrorDocument 500 "<h2>Application error</h2>Rails application failed to start properly"

But how it could looked before? I did some research on this, but most of the time .htaccess files looked like mine, because all of them were placed in redmine/public but in my case this .htaccess was in main public_html folder next to /redmine folder.