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Documentation / email-clients.txt

Based on kernel version 2.6.26. Page generated on 2008-07-16 21:12 EST.

1	Email clients info for Linux
2	======================================================================
3	
4	General Preferences
5	----------------------------------------------------------------------
6	Patches for the Linux kernel are submitted via email, preferably as
7	inline text in the body of the email.  Some maintainers accept
8	attachments, but then the attachments should have content-type
9	"text/plain".  However, attachments are generally frowned upon because
10	it makes quoting portions of the patch more difficult in the patch
11	review process.
12	
13	Email clients that are used for Linux kernel patches should send the
14	patch text untouched.  For example, they should not modify or delete tabs
15	or spaces, even at the beginning or end of lines.
16	
17	Don't send patches with "format=flowed".  This can cause unexpected
18	and unwanted line breaks.
19	
20	Don't let your email client do automatic word wrapping for you.
21	This can also corrupt your patch.
22	
23	Email clients should not modify the character set encoding of the text.
24	Emailed patches should be in ASCII or UTF-8 encoding only.
25	If you configure your email client to send emails with UTF-8 encoding,
26	you avoid some possible charset problems.
27	
28	Email clients should generate and maintain References: or In-Reply-To:
29	headers so that mail threading is not broken.
30	
31	Copy-and-paste (or cut-and-paste) usually does not work for patches
32	because tabs are converted to spaces.  Using xclipboard, xclip, and/or
33	xcutsel may work, but it's best to test this for yourself or just avoid
34	copy-and-paste.
35	
36	Don't use PGP/GPG signatures in mail that contains patches.
37	This breaks many scripts that read and apply the patches.
38	(This should be fixable.)
39	
40	It's a good idea to send a patch to yourself, save the received message,
41	and successfully apply it with 'patch' before sending patches to Linux
42	mailing lists.
43	
44	
45	Some email client (MUA) hints
46	----------------------------------------------------------------------
47	Here are some specific MUA configuration hints for editing and sending
48	patches for the Linux kernel.  These are not meant to be complete
49	software package configuration summaries.
50	
51	Legend:
52	TUI = text-based user interface
53	GUI = graphical user interface
54	
55	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
56	Alpine (TUI)
57	
58	Config options:
59	In the "Sending Preferences" section:
60	
61	- "Do Not Send Flowed Text" must be enabled
62	- "Strip Whitespace Before Sending" must be disabled
63	
64	When composing the message, the cursor should be placed where the patch
65	should appear, and then pressing CTRL-R let you specify the patch file
66	to insert into the message.
67	
68	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
69	Evolution (GUI)
70	
71	Some people use this successfully for patches.
72	
73	When composing mail select: Preformat
74	  from Format->Heading->Preformatted (Ctrl-7)
75	  or the toolbar
76	
77	Then use:
78	  Insert->Text File... (Alt-n x)
79	to insert the patch.
80	
81	You can also "diff -Nru old.c new.c | xclip", select Preformat, then
82	paste with the middle button.
83	
84	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
85	Kmail (GUI)
86	
87	Some people use Kmail successfully for patches.
88	
89	The default setting of not composing in HTML is appropriate; do not
90	enable it.
91	
92	When composing an email, under options, uncheck "word wrap". The only
93	disadvantage is any text you type in the email will not be word-wrapped
94	so you will have to manually word wrap text before the patch. The easiest
95	way around this is to compose your email with word wrap enabled, then save
96	it as a draft. Once you pull it up again from your drafts it is now hard
97	word-wrapped and you can uncheck "word wrap" without losing the existing
98	wrapping.
99	
100	At the bottom of your email, put the commonly-used patch delimiter before
101	inserting your patch:  three hyphens (---).
102	
103	Then from the "Message" menu item, select insert file and choose your patch.
104	As an added bonus you can customise the message creation toolbar menu
105	and put the "insert file" icon there.
106	
107	You can safely GPG sign attachments, but inlined text is preferred for
108	patches so do not GPG sign them.  Signing patches that have been inserted
109	as inlined text will make them tricky to extract from their 7-bit encoding.
110	
111	If you absolutely must send patches as attachments instead of inlining
112	them as text, right click on the attachment and select properties, and
113	highlight "Suggest automatic display" to make the attachment inlined to
114	make it more viewable.
115	
116	When saving patches that are sent as inlined text, select the email that
117	contains the patch from the message list pane, right click and select
118	"save as".  You can use the whole email unmodified as a patch if it was
119	properly composed.  There is no option currently to save the email when you
120	are actually viewing it in its own window -- there has been a request filed
121	at kmail's bugzilla and hopefully this will be addressed.  Emails are saved
122	as read-write for user only so you will have to chmod them to make them
123	group and world readable if you copy them elsewhere.
124	
125	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
126	Lotus Notes (GUI)
127	
128	Run away from it.
129	
130	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
131	Mutt (TUI)
132	
133	Plenty of Linux developers use mutt, so it must work pretty well.
134	
135	Mutt doesn't come with an editor, so whatever editor you use should be
136	used in a way that there are no automatic linebreaks.  Most editors have
137	an "insert file" option that inserts the contents of a file unaltered.
138	
139	To use 'vim' with mutt:
140	  set editor="vi"
141	
142	  If using xclip, type the command
143	  :set paste
144	  before middle button or shift-insert or use
145	  :r filename
146	
147	if you want to include the patch inline.
148	(a)ttach works fine without "set paste".
149	
150	Config options:
151	It should work with default settings.
152	However, it's a good idea to set the "send_charset" to:
153	  set send_charset="us-ascii:utf-8"
154	
155	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
156	Pine (TUI)
157	
158	Pine has had some whitespace truncation issues in the past, but these
159	should all be fixed now.
160	
161	Use alpine (pine's successor) if you can.
162	
163	Config options:
164	- quell-flowed-text is needed for recent versions
165	- the "no-strip-whitespace-before-send" option is needed
166	
167	
168	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
169	Sylpheed (GUI)
170	
171	- Works well for inlining text (or using attachments).
172	- Allows use of an external editor.
173	- Is slow on large folders.
174	- Won't do TLS SMTP auth over a non-SSL connection.
175	- Has a helpful ruler bar in the compose window.
176	- Adding addresses to address book doesn't understand the display name
177	  properly.
178	
179	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
180	Thunderbird (GUI)
181	
182	By default, thunderbird likes to mangle text, but there are ways to
183	coerce it into being nice.
184	
185	- Under account settings, composition and addressing, uncheck "Compose
186	  messages in HTML format".
187	
188	- Edit your Thunderbird config settings to tell it not to wrap lines:
189	      user_pref("mailnews.wraplength", 0);
190	
191	- Edit your Thunderbird config settings so that it won't use format=flowed:
192	      user_pref("mailnews.send_plaintext_flowed", false);
193	
194	- You need to get Thunderbird into preformat mode:
195	. If you compose HTML messages by default, it's not too hard. Just select
196	  "Preformat" from the drop-down box just under the subject line.
197	. If you compose in text by default, you have to tell it to compose a new
198	  message in HTML (just as a one-off), and then force it from there back to
199	  text, else it will wrap lines. To do this, use shift-click on the Write
200	  icon to compose to get HTML compose mode, then select "Preformat" from
201	  the drop-down box just under the subject line.
202	
203	- Allows use of an external editor:
204	  The easiest thing to do with Thunderbird and patches is to use an
205	  "external editor" extension and then just use your favorite $EDITOR
206	  for reading/merging patches into the body text.  To do this, download
207	  and install the extension, then add a button for it using
208	  View->Toolbars->Customize... and finally just click on it when in the
209	  Compose dialog.
210	
211	~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
212	TkRat (GUI)
213	
214	Works.  Use "Insert file..." or external editor.
215	
216	                                ###
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