add list of compatability breaking changes

[ikiwiki.git] / doc / usage.mdwn

diff --git a/doc/usage.mdwn b/doc/usage.mdwn
index 0c618de5c1eac91ac31b11407c90cc4585e0cab6..2e12517ea9105ab17e6e792a78271cc59f149a77 100644 (file)
--- a/doc/usage.mdwn
+++ b/doc/usage.mdwn
@@ -50,6 +50,14 @@ These options control the mode that ikiwiki operates in.
   If used with --setup --refresh, this makes it also update any configured
   wrappers.
 
+* --clean
+
+  This makes ikiwiki clean up by removing any files it denerated in the 
+  `destination` directory, as well as any configured wrappers, and the
+  `.ikiwiki` state directory. This is mostly useful if you're running
+  ikiwiki in a Makefile to build documentation and want a corresponding
+  `clean` target.
+
 * --cgi
 
   Enable [[CGI]] mode. In cgi mode ikiwiki runs as a cgi script, and
@@ -226,6 +234,12 @@ also be configured using a setup file.
   Specifies a rexexp of source files to exclude from processing.
   May be specified multiple times to add to exclude list.
 
+* --include regexp
+
+  Specifies a rexexp of source files, that would normally be excluded,
+  but that you wish to include in processing.
+  May be specified multiple times to add to include list.
+
 * --adminuser name
 
   Specifies a username of a user (or, if openid is enabled, an openid) 
@@ -249,8 +263,8 @@ also be configured using a setup file.
 
   Makes ikiwiki look in the specified directory first, before the regular
   locations when loading library files and plugins. For example, if you set
-  libdir to "/home/you/.ikiwiki/", you can install a Foo.pm plugin as
-  "/home/you/.ikiwiki/IkiWiki/Plugin/Foo.pm".
+  libdir to "/home/you/.ikiwiki/", you can install a foo.pm plugin as
+  "/home/you/.ikiwiki/IkiWiki/Plugin/foo.pm".
 
 * --discussion, --no-discussion
 
@@ -306,20 +320,22 @@ also be configured using a setup file.
   intercepted. If you enable this option then you must run at least the 
   CGI portion of ikiwiki over SSL.
 
-* --getctime
+* --gettime, --no-gettime
 
-  Pull creation time for each new page out of the revision control
-  system. This rarely used option provides a way to get the real creation
-  times of items in weblogs, such as when building a wiki from a new
-  VCS checkout. It is unoptimised and quite slow. It is best used
-  with --rebuild, to force ikiwiki to get the ctime for all pages.
+  Extract creation and modification times for each new page from the
+  the revision control's log. This is done automatically when building a
+  wiki for the first time, so you normally do not need to use this option.
 
 * --set var=value
   
   This allows setting an arbitrary configuration variable, the same as if it
-  were set via a setup file. Since most options can be configured
-  using command-line switches, you will rarely need to use this, but it can be
-  useful for the odd option that lacks a command-line switch.
+  were set via a setup file. Since most options commonly used options can be
+  configured using command-line switches, you will rarely need to use this.
+
+* --set-yaml var=value
+
+  This is like --set, but it allows setting configuration variables that
+  use complex data structures, by passing in a YAML document.
 
 # EXAMPLES
 
@@ -345,6 +361,10 @@ also be configured using a setup file.
 
   This controls what C compiler is used to build wrappers. Default is 'cc'.
 
+* CFLAGS
+
+  This can be used to pass options to the C compiler when building wrappers.
+
 # SEE ALSO
 
 * [[ikiwiki-mass-rebuild]](8)