repobrowse: snapshot support for cgit compatibility

We currently do not display links to snapshots, but may in the
future (optionally, like cgit).  However, support snapshots for
compatibility reasons in case people had cached URLs or
auto-generated them somewhere.

We won't natively support xz and bzip2 just yet, but will
document (at least in comments) how to enable these expensive
compression schemes via git-config(1).  Also, support disabling
certain archive types to twart URL guessing or old cached links
from spiders burning bandwidth.

In retrospect, enabling snapshots for my own cgit views was a
bad idea since it wastes bandwidth from crawlers and is
is often not useful for users with maintainer-built files
(e.g. "configure" from "configure.ac" for autoconf, where
 only the latter is stored in git and the former is
 generated in release tarballs).

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/PublicInbox/Repobrowse.pm b/lib/PublicInbox/Repobrowse.pm
index 0c4cf144..0a812f72 100644
--- a/lib/PublicInbox/Repobrowse.pm
+++ b/lib/PublicInbox/Repobrowse.pm
@@ -25,7 +25,7 @@ use URI::Escape qw(uri_escape_utf8 uri_unescape);
 use PublicInbox::RepobrowseConfig;
 
 my %CMD = map { lc($_) => $_ } qw(Log Commit Tree Patch Blob Plain Tag Atom
-        Diff);
+        Diff Snapshot);
 my %VCS = (git => 'Git');
 my %LOADED;