if file is inaccessible for _apt, disable privilege drop in acquire

[apt.git] / doc / sources.list.5.xml

diff --git a/doc/sources.list.5.xml b/doc/sources.list.5.xml
index 12a7773f54e74922ee8f7c54870131fe758d8b5b..cfd98e545fa22d0fac271a41693272259a2e922c 100644 (file)
--- a/doc/sources.list.5.xml
+++ b/doc/sources.list.5.xml
@@ -36,7 +36,7 @@
       designed to support any number of active sources and a variety of source
       media. The files list one source per line (one line style) or contain multiline
       stanzas defining one or more sources per stanza (deb822 style), with the
-      most preferred source listed first. The information available from the
+      most preferred source listed first (in case a single version is available from more than one source). The information available from the
       configured sources is acquired by <command>apt-get update</command> (or
       by an equivalent command from another APT front-end).
    </para>
@@ -221,8 +221,25 @@ deb-src [ option1=value1 option2=value2 ] uri suite [component1] [component2] [.
                (<option>target</option>) is a multivalue option defining
                which download targets apt will try to acquire from this
                source. If not specified, the default set is defined by the
-               <option>APT::Acquire::Targets</option> configuration scope.
+               <option>Acquire::IndexTargets</option> configuration scope.
+               Aditionally, specific targets can be enabled or disabled by
+               using the identifier as field name instead of using this
+               multivalue option.
          </para></listitem>
+
+         <listitem><para><option>PDiffs</option> (<option>pdiffs</option>)
+               is a yes/no value which controls if APT should try to use PDiffs
+               to update old indexes instead of downloading the new indexes
+               entirely. The value of this option is ignored if the repository
+               doesn't announce the availability of PDiffs.  Defaults to the
+               value of the option with the same name for a specific index file
+               defined in the <option>Acquire::IndexTargets</option> scope,
+               which itself default to the value of configuration option
+               <option>Acquire::PDiffs</option> which defaults to
+               <literal>yes</literal>.
+         </para></listitem>
+
+
        </itemizedlist>
 
        Further more, there are options which if set effect
@@ -271,7 +288,7 @@ deb-src [ option1=value1 option2=value2 ] uri suite [component1] [component2] [.
                repository is considered valid. -Max can be especially useful
                if the repository provides no Valid-Until field on its Release
                file to set your own value, while -Min can be used to increase
-               the valid time on seldomly updated (local) mirrors of a more
+               the valid time on seldom updated (local) mirrors of a more
                frequently updated but less accessible archive (which is in the
                sources.list as well) instead of disabling the check entirely.
                Default to the value of the configuration options