doc: -clone|lei add-external: add bit about the Makefile

[public-inbox.git] / Documentation / public-inbox-clone.pod

diff --git a/Documentation/public-inbox-clone.pod b/Documentation/public-inbox-clone.pod
index fdb57663ceb97db93187ac02c0d27896f03f8256..103260913d92a41c400e47441d8483b3b43ac851 100644 (file)
--- a/Documentation/public-inbox-clone.pod
+++ b/Documentation/public-inbox-clone.pod
@@ -18,6 +18,11 @@ L<public-inbox-index(1)>.  Those commands must be run separately
 if serving/searching the mirror is required.  As-is,
 public-inbox-clone is suitable for creating a git-only backup.
 
+public-inbox-clone creates a Makefile with handy targets to update the
+inbox once indexed.  This Makefile may be edited by the user; it will
+not be rewritten by L<public-inbox-fetch(1)> unless it is removed
+completely.
+
 public-inbox-clone does not use nor require any extra
 configuration files (not even C<~/.public-inbox/config>).
 
@@ -31,6 +36,21 @@ file to speed up subsequent L<public-inbox-fetch(1)>.
 
 =over
 
+=item --epoch=RANGE
+
+Restrict clones of L<public-inbox-v2-format(5)> inboxes to the
+given range of epochs.  The range may be a single non-negative
+integer or a (possibly open-ended) C<LOW..HIGH> range of
+non-negative integers.  C<~> may be prefixed to either (or both)
+integer values to represent the offset from the maximum possible
+value.
+
+For example, C<--epoch=~0> alone clones only the latest epoch,
+C<--epoch=~2..> clones the three latest epochs.
+
+Default: C<0..~0> or C<0..> or C<..~0>
+(all epochs, all three examples are equivalent)
+
 =item -q
 
 =item --quiet