X-Git-Url: https://git.cworth.org/git?p=notmuch-wiki;a=blobdiff_plain;f=faq.mdwn;h=9a038190873eced3223c00eeca9102b11a7af5d1;hp=2e7fa10a03424e80f43493122931f9c295e8c0b9;hb=19816397065f725b205fe1e6ed44b56ce5cdf7f1;hpb=ac34b9b44bcc8693030be54b09885f51433c6bdd

diff --git a/faq.mdwn b/faq.mdwn
index 2e7fa10..9a03819 100644
--- a/faq.mdwn
+++ b/faq.mdwn
@@ -12,6 +12,19 @@ with the same message (i.e. the files have identical Message-ID). A
 `folder:` search will match the folder of any of the files. The
 `--output=files` option outputs all the files of all matching messages.
 
+## How come this query does not list all the emails on the file system? `notmuch search --output=files -- folder:inbox`
+
+You may have emails that only have some of the excluded tags.
+
+Notmuch can be configured to exclude some tags while searching. You can list excluded tags with
+
+	$ notmuch config get search.exclude_tags
+	deleted
+
+To verify this is the reason of the discrepancy, add the excluded tags explicitly to your query.
+
+	$ notmuch search --output=files -- folder:inbox tag:deleted
+
 ## Shouldn't notmuch support inline PGP?
 
 [Why it might not be a good idea](https://dkg.fifthhorseman.net/notes/inline-pgp-harmful/)
@@ -27,7 +40,7 @@ See [[excluding]].
 
 See help for `message-citation-line-format` for details.
 
-## What are sexp queries
+## What are sexp queries?
 
 For the syntax of sexp queries, see [the manual
 page](https://notmuchmail.org/doc/latest/man7/notmuch-sexp-queries.html).
@@ -59,8 +72,8 @@ Next, use that to query the messages:
 
 ## How do I search for punctuation, specific special characters, or regexp?
 
-Please see the [[notmuch-search-terms manual
-page|manpages/notmuch-search-terms-7]] first.
+Please see the [notmuch-search-terms manual
+page](https://notmuchmail.org/doc/latest/man7/notmuch-search-terms.html) first.
 
 The main thing to understand is that Xapian, and therefore Notmuch, searches are
 closer to natural language searches than regular expression
@@ -69,6 +82,17 @@ searches. Punctuation is mostly ignored.
 The boolean prefix searches (see Boolean and Probabilistic Prefixes in the man
 page), such as tag: or path: searches, need an exact match.
 
+For [specific
+fields](https://notmuchmail.org/doc/latest/man7/notmuch-search-terms.html#search-prefixes)
+it is possible to use regex searches (although these are often
+noticeably slower than native Xapian queries). The limited set of
+fields is a quirk of implementation which requires a Xapian "value
+slot" in the database schema. Adding regex support for more fields to
+would require of adding more value slots to the schema. The
+performance impact of that needs to be experimentally evaluated, and
+assuming it is not too bad, some database upgrade code would need to
+be written.
+
 ## How do I search for folders or paths with spaces?
 
 The spaces in the names must be escaped. For example if you use bash or zsh,
@@ -95,23 +119,28 @@ This is required in order to run the `pre-new` and `post-new` hooks.
 No. Tagging is message based.
 
 It is possible, however, to make tags propagate to all messages in a thread
-using a little bit of scripting in the [[post-new
-hook|manpages/notmuch-hooks-5]]. For example, to add the muted tag to all
+using a little bit of scripting in the [post-new
+hook](https://notmuchmail.org/doc/latest/man5/notmuch-hooks.html). For example, to add the muted tag to all
 messages in threads that have at least one message with the muted tag:
 
         THREAD_TAGS="muted"
         for tag in "$THREAD_TAGS"; do
-                notmuch tag +$tag $(notmuch search --output=threads tag:$tag)
+                notmuch tag +$tag thread:{tag:$tag}
         done
 
-You can add other tags to `THREAD_TAGS` as needed. Note that this is one way
-only; you need to explicitly remove the tag from all the messages in a thread to
-stop it from propagating again.
+You can add other tags to `THREAD_TAGS` as needed. Note that this is
+one way only; you need to explicitly remove the tag from all the
+messages in a thread to stop it from propagating again. See
+[notmuch-search-terms](https://notmuchmail.org/doc/latest/man7/notmuch-search-terms.html)
+for discussion of `thread:{}` queries.
 
 
 ## How can I extract a git patchset for an email thread?
 
-See [notmuch-extract-patch](https://github.com/aaptel/notmuch-extract-patch).
+See
+[notmuch-extract-patch](https://github.com/aaptel/notmuch-extract-patch). See
+also notmuch-extract-patch in
+[mailscripts]](https://git.spwhitton.name/mailscripts/).
 
 ## T150-tagging.sh is failing with Xapian 1.4.6