Date: Mon, 6 Jun 2011 23:37:37 -0700
From: Dima Kogan <notmuch@dima.secretsauce.net>
To: notmuch@notmuchmail.org
Subject: Re: [PATCH] added keys to hide/show a portion of the thread
Message-ID: <20110606233737.417dbb44@smart>
In-Reply-To: <1306659404-21840-1-git-send-email-notmuch@dima.secretsauce.net>
References: <1306659404-21840-1-git-send-email-notmuch@dima.secretsauce.net>
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> On Sun, 29 May 2011 01:56:44 -0700
> notmuch@dima.secretsauce.net wrote:
>
>  Here's another improvement. In the notmuch-show display this binds
> '[' to expand all the children messages (replies). Analogously ']'
> collapses all the children messages.

Here's an update of the patch to conform with notmuch's indentation style.

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>From 0e2ef657fe0f6e7f8f2f7e87acd1fbbf58d8d95d Mon Sep 17 00:00:00 2001
From: Dima Kogan <dima@secretsauce.net>
Date: Sun, 29 May 2011 00:37:55 -0700
Subject: [PATCH] added keys to hide/show a portion of the thread

---
 emacs/notmuch-show.el |   31 +++++++++++++++++++++++++++++++
 1 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index 2ba151e..5ecf5ca 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -813,6 +813,8 @@ function is used. "
 	(define-key map " " 'notmuch-show-advance-and-archive)
 	(define-key map (kbd "M-RET") 'notmuch-show-open-or-close-all)
 	(define-key map (kbd "RET") 'notmuch-show-toggle-message)
+	(define-key map "]" 'notmuch-show-hide-hierarchy)
+	(define-key map "[" 'notmuch-show-show-hierarchy)
 	map)
       "Keymap for \"notmuch show\" buffers.")
 (fset 'notmuch-show-mode-map notmuch-show-mode-map)
@@ -1266,6 +1268,35 @@ argument, hide all of the messages."
 	  until (not (notmuch-show-goto-message-next))))
   (force-window-update))
 
+; get the depth, assuming the point is at the start of the header line
+(defun notmuch-show-get-depth ()
+  (save-excursion
+    (let ((start (point)))
+      (- (re-search-forward "^ *") start))))
+
+(defun notmuch-show-hideshow-hierarchy (doshow)
+  "Hides or shows this message and all its replies"
+  (interactive)
+  (save-excursion
+    (notmuch-show-move-to-message-top)
+
+    (let ((depth0 (notmuch-show-get-depth)))
+      (loop do (notmuch-show-message-visible (notmuch-show-get-message-properties)
+					     doshow)
+	    until (or (not (notmuch-show-goto-message-next))
+		      (<= (notmuch-show-get-depth) depth0))))
+    (force-window-update)))
+
+(defun notmuch-show-show-hierarchy ()
+  "Show this message and all its replies"
+  (interactive)
+  (notmuch-show-hideshow-hierarchy 1))
+
+(defun notmuch-show-hide-hierarchy ()
+  "Hide this message and all its replies"
+  (interactive)
+  (notmuch-show-hideshow-hierarchy nil))
+
 (defun notmuch-show-next-button ()
   "Advance point to the next button in the buffer."
   (interactive)
-- 
1.7.5.3


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