add an example of tagging based on content

Probably this can be improved, but it works.

diff --git a/initial_tagging.mdwn b/initial_tagging.mdwn
index 669b8b1c17d9c9a9f1cc2a43f7729bcbcca87c52..603989699fbd4a2c1564d3ad7f2d578f338a7f22 100644 (file)
--- a/initial_tagging.mdwn
+++ b/initial_tagging.mdwn
@@ -44,6 +44,17 @@ generally extremely fast.
 You can use the `post-new` hook, which is automatically run after `notmuch new`,
 to do post-processing. See `man notmuch-hooks` for details on hooks.
 
+## tagging based on content
+
+Since notmuch currently does not index arbitrary headers, it can be
+useful to tag based on content.  Here is a snippet that would fit with
+the 'new' tag approach discussed above.
+
+    for mid in $(notmuch search --output=messages tag:new); do
+        if notmuch show --format=raw "$mid" | awk '!NF{exit 1} /^X-Spam_bar: ++++++++/ {exit 0}'; then
+        notmuch tag +spam "$mid"
+        fi
+    done
 
 ## Other solutions