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Randy Dunlapa6cd6bf2007-10-16 23:29:49 -07001Email clients info for Linux
2======================================================================
3
Dan Carpenter7d19e912014-06-27 18:28:46 -07004Git
5----------------------------------------------------------------------
6These days most developers use `git send-email` instead of regular
7email clients. The man page for this is quite good. On the receiving
8end, maintainers use `git am` to apply the patches.
9
10If you are new to git then send your first patch to yourself. Save it
11as raw text including all the headers. Run `git am raw_email.txt` and
12then review the changelog with `git log`. When that works then send
13the patch to the appropriate mailing list(s).
14
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -070015General Preferences
16----------------------------------------------------------------------
17Patches for the Linux kernel are submitted via email, preferably as
18inline text in the body of the email. Some maintainers accept
19attachments, but then the attachments should have content-type
20"text/plain". However, attachments are generally frowned upon because
21it makes quoting portions of the patch more difficult in the patch
22review process.
23
24Email clients that are used for Linux kernel patches should send the
25patch text untouched. For example, they should not modify or delete tabs
26or spaces, even at the beginning or end of lines.
27
28Don't send patches with "format=flowed". This can cause unexpected
29and unwanted line breaks.
30
31Don't let your email client do automatic word wrapping for you.
32This can also corrupt your patch.
33
34Email clients should not modify the character set encoding of the text.
35Emailed patches should be in ASCII or UTF-8 encoding only.
36If you configure your email client to send emails with UTF-8 encoding,
37you avoid some possible charset problems.
38
39Email clients should generate and maintain References: or In-Reply-To:
40headers so that mail threading is not broken.
41
42Copy-and-paste (or cut-and-paste) usually does not work for patches
43because tabs are converted to spaces. Using xclipboard, xclip, and/or
44xcutsel may work, but it's best to test this for yourself or just avoid
45copy-and-paste.
46
47Don't use PGP/GPG signatures in mail that contains patches.
48This breaks many scripts that read and apply the patches.
49(This should be fixable.)
50
51It's a good idea to send a patch to yourself, save the received message,
52and successfully apply it with 'patch' before sending patches to Linux
53mailing lists.
54
55
56Some email client (MUA) hints
57----------------------------------------------------------------------
58Here are some specific MUA configuration hints for editing and sending
59patches for the Linux kernel. These are not meant to be complete
60software package configuration summaries.
61
62Legend:
63TUI = text-based user interface
64GUI = graphical user interface
65
66~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
67Alpine (TUI)
68
69Config options:
70In the "Sending Preferences" section:
71
72- "Do Not Send Flowed Text" must be enabled
73- "Strip Whitespace Before Sending" must be disabled
74
75When composing the message, the cursor should be placed where the patch
76should appear, and then pressing CTRL-R let you specify the patch file
77to insert into the message.
78
79~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Richard Leitner04a33022014-12-02 17:44:36 +010080Claws Mail (GUI)
81
82Works. Some people use this successfully for patches.
83
84To insert a patch use Message->Insert File (CTRL+i) or an external editor.
85
86If the inserted patch has to be edited in the Claws composition window
87"Auto wrapping" in Configuration->Preferences->Compose->Wrapping should be
88disabled.
89
90~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -070091Evolution (GUI)
92
93Some people use this successfully for patches.
94
95When composing mail select: Preformat
96 from Format->Heading->Preformatted (Ctrl-7)
97 or the toolbar
98
99Then use:
100 Insert->Text File... (Alt-n x)
101to insert the patch.
102
103You can also "diff -Nru old.c new.c | xclip", select Preformat, then
104paste with the middle button.
105
106~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
107Kmail (GUI)
108
109Some people use Kmail successfully for patches.
110
111The default setting of not composing in HTML is appropriate; do not
112enable it.
113
114When composing an email, under options, uncheck "word wrap". The only
115disadvantage is any text you type in the email will not be word-wrapped
116so you will have to manually word wrap text before the patch. The easiest
117way around this is to compose your email with word wrap enabled, then save
118it as a draft. Once you pull it up again from your drafts it is now hard
119word-wrapped and you can uncheck "word wrap" without losing the existing
120wrapping.
121
122At the bottom of your email, put the commonly-used patch delimiter before
123inserting your patch: three hyphens (---).
124
125Then from the "Message" menu item, select insert file and choose your patch.
126As an added bonus you can customise the message creation toolbar menu
127and put the "insert file" icon there.
128
Xishi Qiud9a6ed12013-11-06 13:18:19 -0800129Make the composer window wide enough so that no lines wrap. As of
Lasse Collin5d3687d2011-01-12 17:00:28 -0800130KMail 1.13.5 (KDE 4.5.4), KMail will apply word wrapping when sending
131the email if the lines wrap in the composer window. Having word wrapping
132disabled in the Options menu isn't enough. Thus, if your patch has very
133long lines, you must make the composer window very wide before sending
134the email. See: https://bugs.kde.org/show_bug.cgi?id=174034
135
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -0700136You can safely GPG sign attachments, but inlined text is preferred for
137patches so do not GPG sign them. Signing patches that have been inserted
138as inlined text will make them tricky to extract from their 7-bit encoding.
139
140If you absolutely must send patches as attachments instead of inlining
141them as text, right click on the attachment and select properties, and
142highlight "Suggest automatic display" to make the attachment inlined to
143make it more viewable.
144
145When saving patches that are sent as inlined text, select the email that
146contains the patch from the message list pane, right click and select
147"save as". You can use the whole email unmodified as a patch if it was
148properly composed. There is no option currently to save the email when you
149are actually viewing it in its own window -- there has been a request filed
150at kmail's bugzilla and hopefully this will be addressed. Emails are saved
151as read-write for user only so you will have to chmod them to make them
152group and world readable if you copy them elsewhere.
153
154~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
155Lotus Notes (GUI)
156
157Run away from it.
158
159~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
160Mutt (TUI)
161
162Plenty of Linux developers use mutt, so it must work pretty well.
163
164Mutt doesn't come with an editor, so whatever editor you use should be
165used in a way that there are no automatic linebreaks. Most editors have
166an "insert file" option that inserts the contents of a file unaltered.
167
168To use 'vim' with mutt:
169 set editor="vi"
170
171 If using xclip, type the command
172 :set paste
173 before middle button or shift-insert or use
174 :r filename
175
176if you want to include the patch inline.
177(a)ttach works fine without "set paste".
178
179Config options:
180It should work with default settings.
181However, it's a good idea to set the "send_charset" to:
182 set send_charset="us-ascii:utf-8"
183
184~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
185Pine (TUI)
186
187Pine has had some whitespace truncation issues in the past, but these
188should all be fixed now.
189
190Use alpine (pine's successor) if you can.
191
192Config options:
193- quell-flowed-text is needed for recent versions
194- the "no-strip-whitespace-before-send" option is needed
195
196
197~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
198Sylpheed (GUI)
199
200- Works well for inlining text (or using attachments).
201- Allows use of an external editor.
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -0700202- Is slow on large folders.
203- Won't do TLS SMTP auth over a non-SSL connection.
204- Has a helpful ruler bar in the compose window.
205- Adding addresses to address book doesn't understand the display name
206 properly.
207
208~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
209Thunderbird (GUI)
210
Rob Landleye0e34e92011-01-12 17:00:29 -0800211Thunderbird is an Outlook clone that likes to mangle text, but there are ways
212to coerce it into behaving.
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -0700213
214- Allows use of an external editor:
215 The easiest thing to do with Thunderbird and patches is to use an
216 "external editor" extension and then just use your favorite $EDITOR
217 for reading/merging patches into the body text. To do this, download
218 and install the extension, then add a button for it using
219 View->Toolbars->Customize... and finally just click on it when in the
220 Compose dialog.
221
Rob Landleye0e34e92011-01-12 17:00:29 -0800222To beat some sense out of the internal editor, do this:
223
Rob Landleye0e34e92011-01-12 17:00:29 -0800224- Edit your Thunderbird config settings so that it won't use format=flowed.
225 Go to "edit->preferences->advanced->config editor" to bring up the
Paul McQuadef9a09742014-05-15 13:54:25 -0700226 thunderbird's registry editor.
Rob Landleye0e34e92011-01-12 17:00:29 -0800227
Paul McQuadef9a09742014-05-15 13:54:25 -0700228- Set "mailnews.send_plaintext_flowed" to "false"
Paul Mcquade6989b5b2011-08-13 12:34:54 -0700229
Paul McQuadef9a09742014-05-15 13:54:25 -0700230- Set "mailnews.wraplength" from "72" to "0"
Paul Mcquade6989b5b2011-08-13 12:34:54 -0700231
Paul McQuadef9a09742014-05-15 13:54:25 -0700232- "View" > "Message Body As" > "Plain Text"
Rob Landleye0e34e92011-01-12 17:00:29 -0800233
Paul McQuadef9a09742014-05-15 13:54:25 -0700234- "View" > "Character Encoding" > "Unicode (UTF-8)"
Rob Landleye0e34e92011-01-12 17:00:29 -0800235
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -0700236~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
237TkRat (GUI)
238
239Works. Use "Insert file..." or external editor.
240
Tim Hockin1b6bcdb2008-11-06 12:53:33 -0800241~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
242Gmail (Web GUI)
243
Dave Young5ce9f072010-03-10 15:22:02 -0800244Does not work for sending patches.
Tim Hockin1b6bcdb2008-11-06 12:53:33 -0800245
Dave Young5ce9f072010-03-10 15:22:02 -0800246Gmail web client converts tabs to spaces automatically.
Tim Hockin1b6bcdb2008-11-06 12:53:33 -0800247
Dave Young5ce9f072010-03-10 15:22:02 -0800248At the same time it wraps lines every 78 chars with CRLF style line breaks
249although tab2space problem can be solved with external editor.
Tim Hockin1b6bcdb2008-11-06 12:53:33 -0800250
Dave Young5ce9f072010-03-10 15:22:02 -0800251Another problem is that Gmail will base64-encode any message that has a
252non-ASCII character. That includes things like European names.
Tim Hockin1b6bcdb2008-11-06 12:53:33 -0800253
Randy Dunlapa6cd6bf2007-10-16 23:29:49 -0700254 ###