[PATCH 0/6] Sort by from and subject

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William Casarin William Casarin
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[PATCH 0/6] Sort by from and subject

This patch series replaces my original set[1]. I've been using this
extensivly for about 3 weeks now and I'm pretty happy with it. I've
added the ability to change sort-order on the fly with the O key
binding.

Main use cases
--------------

* subject sorting: github subscriptions

Sorting through your subscribed github repos is now easier than ever!

before: https://jb55.com/s/7889d50bc848b089.png
after:  https://jb55.com/s/c8b5055939d0482f.png

* from sorting: rss feeds

https://jb55.com/s/68a5aa6ecdebbbfe.png


Cheers,
William


[1] id:[hidden email]

William Casarin (6):
  sorting: add the ability to sort by from and subject
  sorting: update ruby bindings for from and subject
  sorting: update man page
  emacs: replace oldest-first with sort-order
  emacs: notmuch-search-orders
  emacs: add notmuch-search-change-order

 bindings/ruby/init.c         | 24 ++++++++++++++++
 doc/man1/notmuch-address.rst |  6 +++-
 emacs/notmuch-hello.el       | 18 ++++++------
 emacs/notmuch-jump.el        | 13 ++++-----
 emacs/notmuch-lib.el         | 15 ++++++++--
 emacs/notmuch-tree.el        |  2 +-
 emacs/notmuch.el             | 66 +++++++++++++++++++++++++++++---------------
 lib/notmuch.h                | 16 +++++++++++
 lib/query.cc                 | 12 ++++++++
 notmuch-search.c             |  4 +++
 10 files changed, 133 insertions(+), 43 deletions(-)

--
2.13.2

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[PATCH 1/6] sorting: add the ability to sort by from and subject

* add {from,subject}-{ascending,descending} sort options
---
 lib/notmuch.h    | 16 ++++++++++++++++
 lib/query.cc     | 12 ++++++++++++
 notmuch-search.c |  4 ++++
 3 files changed, 32 insertions(+)

diff --git a/lib/notmuch.h b/lib/notmuch.h
index f26565f3..071bfe4d 100644
--- a/lib/notmuch.h
+++ b/lib/notmuch.h
@@ -765,6 +765,22 @@ typedef enum {
      */
     NOTMUCH_SORT_NEWEST_FIRST,
     /**
+     * Sort by from: in ascending order
+     */
+    NOTMUCH_SORT_FROM_ASC,
+    /**
+     * Sort by from: in descending order
+     */
+    NOTMUCH_SORT_FROM_DESC,
+    /**
+     * Sort by subject: in ascending order
+     */
+    NOTMUCH_SORT_SUBJECT_ASC,
+    /**
+     * Sort by subject: in descending order
+     */
+    NOTMUCH_SORT_SUBJECT_DESC,
+    /**
      * Sort by message-id.
      */
     NOTMUCH_SORT_MESSAGE_ID,
diff --git a/lib/query.cc b/lib/query.cc
index 9c6ecc8d..106814a8 100644
--- a/lib/query.cc
+++ b/lib/query.cc
@@ -327,6 +327,18 @@ _notmuch_query_search_documents (notmuch_query_t *query,
  case NOTMUCH_SORT_NEWEST_FIRST:
     enquire.set_sort_by_value (NOTMUCH_VALUE_TIMESTAMP, TRUE);
     break;
+ case NOTMUCH_SORT_FROM_ASC:
+    enquire.set_sort_by_value (NOTMUCH_VALUE_FROM, FALSE);
+    break;
+ case NOTMUCH_SORT_FROM_DESC:
+    enquire.set_sort_by_value (NOTMUCH_VALUE_FROM, TRUE);
+    break;
+ case NOTMUCH_SORT_SUBJECT_ASC:
+    enquire.set_sort_by_value (NOTMUCH_VALUE_SUBJECT, FALSE);
+    break;
+ case NOTMUCH_SORT_SUBJECT_DESC:
+    enquire.set_sort_by_value (NOTMUCH_VALUE_SUBJECT, TRUE);
+    break;
  case NOTMUCH_SORT_MESSAGE_ID:
     enquire.set_sort_by_value (NOTMUCH_VALUE_MESSAGE_ID, FALSE);
     break;
diff --git a/notmuch-search.c b/notmuch-search.c
index 380e9d8f..b80647e9 100644
--- a/notmuch-search.c
+++ b/notmuch-search.c
@@ -789,6 +789,10 @@ static const notmuch_opt_desc_t common_options[] = {
     { NOTMUCH_OPT_KEYWORD, &search_context.sort, "sort", 's',
       (notmuch_keyword_t []){ { "oldest-first", NOTMUCH_SORT_OLDEST_FIRST },
       { "newest-first", NOTMUCH_SORT_NEWEST_FIRST },
+      { "from-ascending", NOTMUCH_SORT_FROM_ASC },
+      { "from-descending", NOTMUCH_SORT_FROM_DESC },
+      { "subject-ascending", NOTMUCH_SORT_SUBJECT_ASC },
+      { "subject-descending", NOTMUCH_SORT_SUBJECT_DESC },
       { 0, 0 } } },
     { NOTMUCH_OPT_KEYWORD, &search_context.format_sel, "format", 'f',
       (notmuch_keyword_t []){ { "json", NOTMUCH_FORMAT_JSON },
--
2.13.2

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[PATCH 2/6] sorting: update ruby bindings for from and subject

In reply to this post by William Casarin
---
 bindings/ruby/init.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/bindings/ruby/init.c b/bindings/ruby/init.c
index 5556b43e..ace8f666 100644
--- a/bindings/ruby/init.c
+++ b/bindings/ruby/init.c
@@ -104,6 +104,30 @@ Init_notmuch (void)
      */
     rb_define_const (mod, "SORT_NEWEST_FIRST", INT2FIX (NOTMUCH_SORT_NEWEST_FIRST));
     /*
+     * Document-const: Notmuch::SORT_FROM_ASC
+     *
+     * Sort query results by from in ascending order
+     */
+    rb_define_const (mod, "SORT_FROM_ASC", INT2FIX (NOTMUCH_SORT_FROM_ASC));
+    /*
+     * Document-const: Notmuch::SORT_FROM_DESC
+     *
+     * Sort query results by from in descending order
+     */
+    rb_define_const (mod, "SORT_FROM_DESC", INT2FIX (NOTMUCH_SORT_FROM_DESC));
+    /*
+     * Document-const: Notmuch::SORT_SUBJECT_ASC
+     *
+     * Sort query results by subject in ascending order
+     */
+    rb_define_const (mod, "SORT_SUBJECT_ASC", INT2FIX (NOTMUCH_SORT_SUBJECT_ASC));
+    /*
+     * Document-const: Notmuch::SORT_SUBJECT_DESC
+     *
+     * Sort query results by from in descending order
+     */
+    rb_define_const (mod, "SORT_SUBJECT_DESC", INT2FIX (NOTMUCH_SORT_SUBJECT_DESC));
+    /*
      * Document-const: Notmuch::SORT_MESSAGE_ID
      *
      * Sort query results by message id
--
2.13.2

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[PATCH 3/6] sorting: update man page

In reply to this post by William Casarin
---
 doc/man1/notmuch-address.rst | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/doc/man1/notmuch-address.rst b/doc/man1/notmuch-address.rst
index cc31cc5a..38ae9a25 100644
--- a/doc/man1/notmuch-address.rst
+++ b/doc/man1/notmuch-address.rst
@@ -77,7 +77,11 @@ Supported options for **address** include
             frequently among the matching messages. If --output=count
             is specified, include all variants in the count.
 
-    ``--sort=``\ (**newest-first**\ \|\ **oldest-first**)
+    ``--sort=<order>``
+        Where <order> can be one of **oldest-first**, **newest-first**,
+        **subject-ascending**, **subject-descending**,
+        **from-ascending**, **from-descending**
+
         This option can be used to present results in either
         chronological order (**oldest-first**) or reverse chronological
         order (**newest-first**).
--
2.13.2

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[PATCH 4/6] emacs: replace oldest-first with sort-order

In reply to this post by William Casarin
This generalizes notmuch-search-oldest-first to
notmuch-search-sort-order. notmuch-search-sort-order can now be one
of:

  * oldest-first
  * newest-first
  * subject-ascending
  * subject-descending
  * from-ascending
  * from-descending

Order toggling now simply inverts the corresponding option.
---
 emacs/notmuch-hello.el | 18 +++++++++--------
 emacs/notmuch-jump.el  | 13 +++++--------
 emacs/notmuch-lib.el   | 10 ++++++++--
 emacs/notmuch-tree.el  |  2 +-
 emacs/notmuch.el       | 52 ++++++++++++++++++++++++++++----------------------
 5 files changed, 53 insertions(+), 42 deletions(-)

diff --git a/emacs/notmuch-hello.el b/emacs/notmuch-hello.el
index c858a20b..dd733f9f 100644
--- a/emacs/notmuch-hello.el
+++ b/emacs/notmuch-hello.el
@@ -95,7 +95,11 @@ searches so they still work in customize."
     (choice :tag " Sort Order"
     (const :tag "Default" nil)
     (const :tag "Oldest-first" oldest-first)
-    (const :tag "Newest-first" newest-first)))
+    (const :tag "Newest-first" newest-first)
+    (const :tag "Subject-ascending" subject-ascending)
+    (const :tag "Subject-descending" subject-descending)
+    (const :tag "From-ascending" from-ascending)
+    (const :tag "From-descending" from-descending)))
      (group :format "%v" :inline t (const :format "" :search-type)
     (choice :tag " Search Type"
     (const :tag "Search mode" nil)
@@ -381,7 +385,7 @@ afterwards.")
     (setq search (notmuch-hello-trim search))
     (let ((history-delete-duplicates t))
       (add-to-history 'notmuch-search-history search)))
-  (notmuch-search search notmuch-search-oldest-first))
+  (notmuch-search search notmuch-search-sort-order))
 
 (defun notmuch-hello-add-saved-search (widget)
   (interactive)
@@ -443,7 +447,7 @@ diagonal."
     (notmuch-search (widget-get widget
  :notmuch-search-terms)
     (widget-get widget
- :notmuch-search-oldest-first))))
+ :notmuch-search-sort-order))))
 
 (defun notmuch-saved-search-count (search)
   (car (process-lines notmuch-command "count" search)))
@@ -575,10 +579,8 @@ with `notmuch-hello-query-counts'."
   (widget-insert (make-string column-indent ? )))
       (let* ((name (plist-get elem :name))
      (query (plist-get elem :query))
-     (oldest-first (case (plist-get elem :sort-order)
-     (newest-first nil)
-     (oldest-first t)
-     (otherwise notmuch-search-oldest-first)))
+     (order (plist-get elem :sort-order))
+     (sort-order (if (not order) notmuch-search-sort-order order))
      (search-type (eq (plist-get elem :search-type) 'tree))
      (msg-count (plist-get elem :count)))
  (widget-insert (format "%8s "
@@ -586,7 +588,7 @@ with `notmuch-hello-query-counts'."
  (widget-create 'push-button
        :notify #'notmuch-hello-widget-search
        :notmuch-search-terms query
-       :notmuch-search-oldest-first oldest-first
+       :notmuch-search-sort-order sort-order
        :notmuch-search-type search-type
        name)
  (setq column-indent
diff --git a/emacs/notmuch-jump.el b/emacs/notmuch-jump.el
index 3e20b8c7..5fd654fb 100644
--- a/emacs/notmuch-jump.el
+++ b/emacs/notmuch-jump.el
@@ -48,17 +48,14 @@ fast way to jump to a saved search from anywhere in Notmuch."
       (let* ((saved-search (notmuch-hello-saved-search-to-plist saved-search))
      (key (plist-get saved-search :key)))
  (when key
-  (let ((name (plist-get saved-search :name))
- (query (plist-get saved-search :query))
- (oldest-first
- (case (plist-get saved-search :sort-order)
-   (newest-first nil)
-   (oldest-first t)
-   (otherwise (default-value 'notmuch-search-oldest-first)))))
+  (let* ((name (plist-get saved-search :name))
+ (query (plist-get saved-search :query))
+ (order (plist-get saved-search :sort-order))
+ (sort-order (if (not order) notmuch-search-sort-order order)))
     (push (list key name
  (if (eq (plist-get saved-search :search-type) 'tree)
     `(lambda () (notmuch-tree ',query))
-  `(lambda () (notmuch-search ',query ',oldest-first))))
+  `(lambda () (notmuch-search ',query ',sort-order))))
   action-map)))))
     (setq action-map (nreverse action-map))
 
diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
index 010be454..ee7b67d3 100644
--- a/emacs/notmuch-lib.el
+++ b/emacs/notmuch-lib.el
@@ -92,14 +92,20 @@ $PATH)."
   :type 'string
   :group 'notmuch-external)
 
-(defcustom notmuch-search-oldest-first t
+(defcustom notmuch-search-sort-order 'oldest-first
   "Show the oldest mail first when searching.
 
 This variable defines the default sort order for displaying
 search results. Note that any filtered searches created by
 `notmuch-search-filter' retain the search order of the parent
 search."
-  :type 'boolean
+  :type '(choice :tag " Sort Order"
+ (const :tag "Oldest-first" oldest-first)
+ (const :tag "Newest-first" newest-first)
+ (const :tag "Subject-ascending" subject-ascending)
+ (const :tag "Subject-descending" subject-descending)
+ (const :tag "From-ascending" from-ascending)
+ (const :tag "From-descending" from-descending))
   :group 'notmuch-search)
 
 (defcustom notmuch-poll-script nil
diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index c00315e8..b95ff71f 100644
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -33,7 +33,7 @@
 (require 'notmuch-parser)
 
 (eval-when-compile (require 'cl))
-(declare-function notmuch-search "notmuch" (&optional query oldest-first target-thread target-line))
+(declare-function notmuch-search "notmuch" (&optional query sort-order target-thread target-line))
 (declare-function notmuch-call-notmuch-process "notmuch" (&rest args))
 (declare-function notmuch-read-query "notmuch" (prompt))
 (declare-function notmuch-search-find-thread-id "notmuch" (&optional bare))
diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 44402f8a..334458b7 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -380,7 +380,7 @@ Complete list of currently available key bindings:
 
 \\{notmuch-search-mode-map}"
   (make-local-variable 'notmuch-search-query-string)
-  (make-local-variable 'notmuch-search-oldest-first)
+  (make-local-variable 'notmuch-search-sort-order)
   (make-local-variable 'notmuch-search-target-thread)
   (make-local-variable 'notmuch-search-target-line)
   (setq notmuch-buffer-refresh-function #'notmuch-search-refresh-view)
@@ -959,7 +959,7 @@ PROMPT is the string to prompt with."
 
 (put 'notmuch-search 'notmuch-doc "Search for messages.")
 ;;;###autoload
-(defun notmuch-search (&optional query oldest-first target-thread target-line no-display)
+(defun notmuch-search (&optional query sort-order target-thread target-line no-display)
   "Display threads matching QUERY in a notmuch-search buffer.
 
 If QUERY is nil, it is read interactively from the minibuffer.
@@ -982,7 +982,7 @@ the configured default sort order."
     nil
     ;; Use the default search order (if we're doing a search from a
     ;; search buffer, ignore any buffer-local overrides)
-    (default-value 'notmuch-search-oldest-first)))
+    (default-value 'notmuch-search-sort-order)))
 
   (let* ((query (or query (notmuch-read-query "Notmuch search: ")))
  (buffer (get-buffer-create (notmuch-search-buffer-title query))))
@@ -993,29 +993,26 @@ the configured default sort order."
     ;; Don't track undo information for this buffer
     (set 'buffer-undo-list t)
     (set 'notmuch-search-query-string query)
-    (set 'notmuch-search-oldest-first oldest-first)
+    (set 'notmuch-search-sort-order sort-order)
     (set 'notmuch-search-target-thread target-thread)
     (set 'notmuch-search-target-line target-line)
     (notmuch-tag-clear-cache)
     (let ((proc (get-buffer-process (current-buffer)))
   (inhibit-read-only t))
       (if proc
-  (error "notmuch search process already running for query `%s'" query)
- )
+  (error "notmuch search process already running for query `%s'" query))
       (erase-buffer)
       (goto-char (point-min))
       (save-excursion
- (let ((proc (notmuch-start-notmuch
-     "notmuch-search" buffer #'notmuch-search-process-sentinel
-     "search" "--format=sexp" "--format-version=4"
-     (if oldest-first
- "--sort=oldest-first"
-       "--sort=newest-first")
-     query))
-      ;; Use a scratch buffer to accumulate partial output.
-      ;; This buffer will be killed by the sentinel, which
-      ;; should be called no matter how the process dies.
-      (parse-buf (generate-new-buffer " *notmuch search parse*")))
+ (let* ((proc (notmuch-start-notmuch
+      "notmuch-search" buffer #'notmuch-search-process-sentinel
+      "search" "--format=sexp" "--format-version=4"
+      (concat "--sort=" (symbol-name sort-order))
+      query))
+       ;; Use a scratch buffer to accumulate partial output.
+       ;; This buffer will be killed by the sentinel, which
+       ;; should be called no matter how the process dies.
+       (parse-buf (generate-new-buffer " *notmuch search parse*")))
   (process-put proc 'parse-buf parse-buf)
   (set-process-filter proc 'notmuch-search-process-filter)
   (set-process-query-on-exit-flag proc nil))))
@@ -1031,20 +1028,29 @@ thread. Otherwise, point will be moved to attempt to be in the
 same relative position within the new buffer."
   (interactive)
   (let ((target-line (line-number-at-pos))
- (oldest-first notmuch-search-oldest-first)
+ (sort-order notmuch-search-sort-order)
  (target-thread (notmuch-search-find-thread-id 'bare))
  (query notmuch-search-query-string))
     ;; notmuch-search erases the current buffer.
-    (notmuch-search query oldest-first target-thread target-line t)
+    (notmuch-search query sort-order target-thread target-line t)
     (goto-char (point-min))))
 
+(defun notmuch-toggle-order (order)
+  (case order
+    (newest-first 'oldest-first)
+    (oldest-first 'newest-first)
+    (from-ascending 'from-descending)
+    (from-descending 'from-ascending)
+    (subject-ascending 'subject-descending)
+    (subject-descending 'subject-ascending)))
+
 (defun notmuch-search-toggle-order ()
   "Toggle the current search order.
 
 This command toggles the sort order for the current search. The
-default sort order is defined by `notmuch-search-oldest-first'."
+default sort order is defined by `notmuch-search-sort-order'."
   (interactive)
-  (set 'notmuch-search-oldest-first (not notmuch-search-oldest-first))
+  (set 'notmuch-search-sort-order (notmuch-toggle-order notmuch-search-sort-order))
   (notmuch-search-refresh-view))
 
 (defun notmuch-group-disjunctive-query-string (query-string)
@@ -1068,7 +1074,7 @@ current search results AND the additional query string provided."
     (notmuch-search (if (string= grouped-original-query "*")
  grouped-query
       (concat grouped-original-query " and " grouped-query))
-    notmuch-search-oldest-first)))
+    notmuch-search-sort-order)))
 
 (defun notmuch-search-filter-by-tag (tag)
   "Filter the current search results based on a single tag.
@@ -1077,7 +1083,7 @@ Runs a new search matching only messages that match both the
 current search results AND that are tagged with the given tag."
   (interactive
    (list (notmuch-select-tag-with-completion "Filter by tag: ")))
-  (notmuch-search (concat notmuch-search-query-string " and tag:" tag) notmuch-search-oldest-first))
+  (notmuch-search (concat notmuch-search-query-string " and tag:" tag) notmuch-search-sort-order))
 
 ;;;###autoload
 (defun notmuch ()
--
2.13.2

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[PATCH 5/6] emacs: notmuch-search-orders

In reply to this post by William Casarin
Create a notmuch-sort-orders alist to be shared between
notmuch-search-sort-orders and notmuch-change-search-order
---
 emacs/notmuch-lib.el | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/emacs/notmuch-lib.el b/emacs/notmuch-lib.el
index ee7b67d3..16725863 100644
--- a/emacs/notmuch-lib.el
+++ b/emacs/notmuch-lib.el
@@ -92,6 +92,14 @@ $PATH)."
   :type 'string
   :group 'notmuch-external)
 
+(setq notmuch-sort-orders
+  '(("Oldest-first" . oldest-first)
+    ("Newest-first" . newest-first)
+    ("Subject-ascending" . subject-ascending)
+    ("Subject-descending" . subject-descending)
+    ("From-ascending" . from-ascending)
+    ("From-descending" . from-descending)))
+
 (defcustom notmuch-search-sort-order 'oldest-first
   "Show the oldest mail first when searching.
 
@@ -99,13 +107,10 @@ This variable defines the default sort order for displaying
 search results. Note that any filtered searches created by
 `notmuch-search-filter' retain the search order of the parent
 search."
-  :type '(choice :tag " Sort Order"
- (const :tag "Oldest-first" oldest-first)
- (const :tag "Newest-first" newest-first)
- (const :tag "Subject-ascending" subject-ascending)
- (const :tag "Subject-descending" subject-descending)
- (const :tag "From-ascending" from-ascending)
- (const :tag "From-descending" from-descending))
+  :type (append '(choice :tag " Sort Order")
+ (mapcar (lambda (pair)
+  `(const :tag ,(car pair) ,(cdr pair)))
+ notmuch-sort-orders))
   :group 'notmuch-search)
 
 (defcustom notmuch-poll-script nil
--
2.13.2

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[PATCH 6/6] emacs: add notmuch-search-change-order

In reply to this post by William Casarin
notmuch-search-change-order pops up a completing-read minibuffer
completion window for choosing sort-orders.
---
 emacs/notmuch.el | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 334458b7..93b4e582 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -178,6 +178,7 @@ there will be called at other points of notmuch execution."
     (define-key map "r" 'notmuch-search-reply-to-thread-sender)
     (define-key map "R" 'notmuch-search-reply-to-thread)
     (define-key map "o" 'notmuch-search-toggle-order)
+    (define-key map "O" 'notmuch-search-change-order)
     (define-key map "c" 'notmuch-search-stash-map)
     (define-key map "t" 'notmuch-search-filter-by-tag)
     (define-key map "l" 'notmuch-search-filter)
@@ -1044,6 +1045,19 @@ same relative position within the new buffer."
     (subject-ascending 'subject-descending)
     (subject-descending 'subject-ascending)))
 
+(defun notmuch-search-change-order (&optional sort-order)
+  "Change the current search order.
+
+This command changes the order for current search. The default
+sort order is defuned by `notmuch-search-sort-order'."
+  (interactive)
+  (let ((so (if sort-order sort-order
+      (cdr (assoc (completing-read
+   "Select a sort order:" notmuch-sort-orders)
+  notmuch-sort-orders)))))
+    (set 'notmuch-search-sort-order so)
+    (notmuch-search-refresh-view)))
+
 (defun notmuch-search-toggle-order ()
   "Toggle the current search order.
 
--
2.13.2

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Jani Nikula Jani Nikula
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Re: [PATCH 0/6] Sort by from and subject

In reply to this post by William Casarin
On Mon, 25 Sep 2017, William Casarin <[hidden email]> wrote:
> This patch series replaces my original set[1]. I've been using this
> extensivly for about 3 weeks now and I'm pretty happy with it. I've
> added the ability to change sort-order on the fly with the O key
> binding.

I think there are two considerations here:

First, is this something we want to have? Is this generally useful?
There's still the issue of From: and Subject: needing more heuristic for
useful sorting that I mentioned in id:[hidden email].

Second, if we decide we want this, IMHO the interfaces (both human and
the lib) need to split the sort key and sort order from the
start. Fixing it later on is not going to be fun.


BR,
Jani.
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William Casarin William Casarin
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Re: [PATCH 0/6] Sort by from and subject

Hey Jani,

Jani Nikula <[hidden email]> writes:

> I think there are two considerations here:
>
> First, is this something we want to have? Is this generally useful?

Sorting by from and subject are in most mail clients (mutt, gnus, outlook...)

> There's still the issue of From: and Subject: needing more heuristic for
> useful sorting that I mentioned in id:[hidden email].

I think I understand what you mean in id:[hidden email] but I
don't have enough knowledge of notmuch to implement what you're asking
:(. I believe these are rare cases because I haven't ran into the issue
you described?

> Second, if we decide we want this, IMHO the interfaces (both human and
> the lib) need to split the sort key and sort order from the
> start. Fixing it later on is not going to be fun.

I agree, I figured that would have been a larger refactor so I decided
not to mix it in with this one. I'll start working on a branch that
addresses this.


Thanks!
William

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Re: [PATCH 0/6] Sort by from and subject

On Sat, 30 Sep 2017, William Casarin <[hidden email]> wrote:
> Jani Nikula <[hidden email]> writes:
>
>> I think there are two considerations here:
>>
>> First, is this something we want to have? Is this generally useful?
>
> Sorting by from and subject are in most mail clients (mutt, gnus, outlook...)

Which of those display results as threads, and of those that do, how do
they sort the threads? In the notmuch case, the threads would be sorted
based on one of the matching messages. Which one should it be? For
current date based searches, the message used for sorting is also
selected based on date.

If we expand the sorting, perhaps we should also think about sorting by
relevance provided by Xapian. Not saying you'd have to do this, but I'd
like to figure out how all of this should work. The implementation
doesn't look particularly difficult, it's the design that's harder to
get right.

>> There's still the issue of From: and Subject: needing more heuristic for
>> useful sorting that I mentioned in id:[hidden email].
>
> I think I understand what you mean in id:[hidden email] but I
> don't have enough knowledge of notmuch to implement what you're asking
> :(. I believe these are rare cases because I haven't ran into the issue
> you described?

Look at the subject line of this message. Should it be sorted starting
at "Re:", "[PATCH", or "Sort"? You could argue for and against any one
of them. Contrast that with the thread sorting above: If the matching
message in this thread changes from one with vs. without "Re:", the sort
placement of the thread could change considerably.

It's common for some corporate mail systems to switch "Firstname
Lastname" in messages to "Lastname, Firstname". Should we do something
about that?

Arguably we could do the sorting first, and think of ways to improve it
afterwards.

>> Second, if we decide we want this, IMHO the interfaces (both human and
>> the lib) need to split the sort key and sort order from the
>> start. Fixing it later on is not going to be fun.
>
> I agree, I figured that would have been a larger refactor so I decided
> not to mix it in with this one. I'll start working on a branch that
> addresses this.

Please wait for feedback from others first, to not waste effort based on
just my opinions. I don't make the decisions here. :)


BR,
Jani.
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Mark Walters Mark Walters
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Re: [PATCH 0/6] Sort by from and subject


Hi

On Sat, 30 Sep 2017, Jani Nikula <[hidden email]> wrote:

> On Sat, 30 Sep 2017, William Casarin <[hidden email]> wrote:
>> Jani Nikula <[hidden email]> writes:
>>
>>> I think there are two considerations here:
>>>
>>> First, is this something we want to have? Is this generally useful?
>>
>> Sorting by from and subject are in most mail clients (mutt, gnus, outlook...)
>
> Which of those display results as threads, and of those that do, how do
> they sort the threads? In the notmuch case, the threads would be sorted
> based on one of the matching messages. Which one should it be? For
> current date based searches, the message used for sorting is also
> selected based on date.

I agree with Jani that for thread based views sorting by from is a
little odd -- sorting by subject less so as that is mostly constant in a
thread.

But allowing sorting by from in message based views could be useful. If
we are looking at the notmuch-emacs frontend then that would be in tree
view. This calls notmuch-show.c from the CLI, so that is the place I
would suggest we do this. If notmuch-show.c returns each message as "if
it were in its own thread" in the sense of the sexp output (see
devel/schemata) I think notmuch-tree would just work.

>>> There's still the issue of From: and Subject: needing more heuristic for
>>> useful sorting that I mentioned in id:[hidden email].
>>
>> I think I understand what you mean in id:[hidden email] but I
>> don't have enough knowledge of notmuch to implement what you're asking
>> :(. I believe these are rare cases because I haven't ran into the issue
>> you described?
>
> Look at the subject line of this message. Should it be sorted starting
> at "Re:", "[PATCH", or "Sort"? You could argue for and against any one
> of them. Contrast that with the thread sorting above: If the matching
> message in this thread changes from one with vs. without "Re:", the sort
> placement of the thread could change considerably.
>
> It's common for some corporate mail systems to switch "Firstname
> Lastname" in messages to "Lastname, Firstname". Should we do something
> about that?
>
> Arguably we could do the sorting first, and think of ways to improve it
> afterwards.

These are concerns, but I agree that we try some form of sorting first
and then think about improving it. I think the above as an interface to
notmuch-tree should work -- I had something similar in the very early
days of notmuch-tree (when it was notmuch-pick) but dropped it when
trying to keep the patch set small enough to be even vaguely manageable.

Best wishes

Mark

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