3 @setfilename emacs-mime-ja
4 @settitle Emacs MIME Manual
10 \e$B$3$N%U%!%$%k$O
\e(B Emacs MIME
\e$B%$%s%?!<%U%'!<%9$N5!G=$rJ8=q2=$7$?$b$N$G$9!#
\e(B
12 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
13 Free Software Foundation, Inc.
16 Permission is granted to copy, distribute and/or modify this document
17 under the terms of the GNU Free Documentation License, Version 1.1 or
18 any later version published by the Free Software Foundation; with no
19 Invariant Sections, with the Front-Cover texts being ``A GNU
20 Manual'', and with the Back-Cover Texts as in (a) below. A copy of the
21 license is included in the section entitled ``GNU Free Documentation
22 License'' in the Emacs manual.
24 \e$B$3$NJ8=q$r!"%U%j!<%=%U%H%&%'%":bCDH/9T$N
\e(B GNU
\e$B%U%j!<J8=qMxMQ5vBz7@Ls=q
\e(B
25 \e$BBh
\e(B 1.1
\e$BHG$^$?$O$=$l0J9_$NHG$,Dj$a$k>r7o$N2<$GJ#@=!"G[I[!"$"$k$$$OJQ99$9
\e(B
26 \e$B$k$3$H$r5v2D$7$^$9!#JQ99IT2DItJ,$O;XDj$7$^$;$s!#!V
\e(BA GNU Manual
\e$B!W$OI=I=;f
\e(B
27 \e$B%F%-%9%H!"0J2<$N
\e(B (a)
\e$B$ON"I=;f%F%-%9%H$G$9!#$3$NMxMQ5vBz7@Ls=q$NJ#<L$O
\e(B
28 \e$B!V
\e(BEmacs manual
\e$B!W$N!V
\e(BGNU
\e$B%U%j!<J8=qMxMQ5vBz7@Ls=q!W$H$$$&>O$K4^$^$l$F$$$^
\e(B
31 (a) The FSF's Back-Cover Text is: ``You have freedom to copy and modify
32 this GNU Manual, like GNU software. Copies published by the Free
33 Software Foundation raise funds for GNU development.''
35 (a) FSF
\e$B$NN"I=;f%F%-%9%H
\e(B:
\e$B!V$"$J$?$K$O$3$N
\e(B GNU Manual
\e$B$r
\e(B GNU
\e$B%=%U%H%&%'%"
\e(B
36 \e$B$N$h$&$KJ#@=$7$?$jJQ99$9$k<+M3$,$"$j$^$9!#J#@=$O%U%j!<%=%U%H%&%'%":bCD$K
\e(B
37 \e$B$h$C$F=PHG$5$l$^$7$?!#
\e(B(
\e$B%U%j!<%=%U%H%&%'%":bCD$O
\e(B) GNU
\e$B$N3+H/$N$?$a$KI,MW
\e(B
38 \e$B$J;q6b$r=8$a$F$$$^$9!#!W
\e(B
40 This document is part of a collection distributed under the GNU Free
41 Documentation License. If you want to distribute this document
42 separately from the collection, you can do so by adding a copy of the
43 license to the document, as described in section 6 of the license.
45 \e$B$3$NJ8=q$O!V
\e(BGNU
\e$B%U%j!<J8=qMxMQ5vBz7@Ls=q!W$K4p$E$$$FG[I[$5$l$?<}=8Cx:nJ*
\e(B
46 \e$B$N0lIt$G$9!#$b$7$"$J$?$,$3$NJ8=q$r<}=8Cx:nJ*$+$iJ,N%$7$FG[I[$7$?$$$H$-$O!"
\e(B
47 \e$B7@Ls=q$NBh
\e(B 6
\e$B9`$K5-=R$5$l$F$$$k$h$&$K!"J8=q$K7@Ls=q$NJ#<L$rIU2C$9$k$3$H
\e(B
48 \e$B$K$h$C$F!"9T$J$&$3$H$,$G$-$^$9!#
\e(B
54 * Emacs MIME-ja: (emacs-mime-ja). Emacs MIME de/composition library (Japanese).
59 @setchapternewpage odd
62 @title Emacs MIME Manual
64 @author by Lars Magne Ingebrigtsen
66 @vskip 0pt plus 1filll
73 \e$B$3$N%^%K%e%"%k$O
\e(B @acronym{MIME}
\e$B%a%C%;!<%8$NI=<($H:n@.$K;H$o$l$k%i%$%V%i
\e(B
74 \e$B%j!<$rJ8=q2=$7$?$b$N$G$9!#
\e(B
76 \e$B$3$N%^%K%e%"%k$O!"
\e(B@acronym{MIME}
\e$B$N%(%s%3!<%I
\e(B/
\e$B%G%3!<%I!&%W%m%;%9$N?6$kIq
\e(B
77 \e$B$$$rJQ99$7$?$$$+!"
\e(BEmacs @acronym{MIME}
\e$B%i%$%V%i%j!<$,$I$N$h$&$KF0:n$9$k
\e(B
78 \e$B$+$N$b$C$H>\:Y$JIA<L$rK>$`%f!<%6!"$*$h$S
\e(B @acronym{MIME}
\e$B$NMWAG$rA`:n$9$k
\e(B
79 \e$B4X?t$*$h$S%3%^%s%I$r=q$-$?$$?M$?$A$rBP>]$K$7$F$$$^$9!#
\e(B
81 @acronym{MIME}
\e$B$O
\e(B @dfn{Multipurpose Internet Mail Extensions}
\e$B$N>JN,I=5-
\e(B
82 \e$B$G$9!#$3$NI8=`$OB??t$N
\e(B RFC
\e$B$KJ8=q2=$5$l$F$$$F!"<g$J$b$N$O<!$NDL$j$G$9
\e(B:
83 RFC2045 (
\e$B%$%s%?!<%M%C%H!&%a%C%;!<%8K\J8$N=q<0
\e(B), RFC2046 (
\e$B%a%G%#%"%?%$%W
\e(B),
84 RFC2047 (
\e$B%a%C%;!<%8%X%C%@!<$NHs
\e(B-@acronym{ASCII}
\e$B%F%-%9%H3HD%
\e(B),
85 RFC2048 (
\e$BEPO?<jB3
\e(B), RFC2049 (
\e$BE,9g4p=`$H;vNc
\e(B)
\e$B!#
\e(B@acronym{MIME}
\e$B$K=`5r$7$?
\e(B
86 \e$B%=%U%H%&%'%"$r=q$3$&$H;W$C$F$$$k?M$OC/$G$b!">/$J$/$H
\e(B
87 \e$B$b
\e(B RFC2045
\e$B$H
\e(B RFC2047
\e$B$OFI$s$G$*$/$3$H$r6/$/4+$a$^$9!#
\e(B
90 * Decoding and Viewing::
\e$B%G%3!<%I$HI=<($N$?$a$NOHAH$_
\e(B
91 * Composing:: @acronym{MML}; @acronym{MIME}
\e$B%Q!<%H5-=RMQ8@8l
\e(B
92 * Interface Functions::
\e$B4pK\E*$J4X?t$K4X$9$kCj>]35G0
\e(B
93 * Basic Functions::
\e$B%f!<%F%#%j%F%#!<$*$h$S4pK\E*$J2r@O$N$?$a$N4X?t
\e(B
94 * Standards::
\e$B;H$o$l$F$$$k
\e(B RFC
\e$B$H:n6HJ8=q$N35N,
\e(B
95 * Index::
\e$B4X?t$*$h$SJQ?t$N:w0z
\e(B
98 @node Decoding and Viewing
99 @chapter
\e$B%G%3!<%I$HI=<(
\e(B
101 \e$B$3$N>O$O!">e0L3,AX$G$N
\e(B @acronym{MIME}
\e$B%a%C%;!<%8$N%G%3!<%I$HI=<($r07$$$^
\e(B
104 \e$B$=$N<g$JL\E*$O!":G=i$K
\e(B @acronym{MIME}
\e$B$N5-;v$r2r@O$7!"<!$K$=$N2r@O$N7k2L
\e(B
105 \e$BJV$5$l$k!V
\e(B@dfn{
\e$B%O%s%I%k
\e(B}
\e$B!W
\e(B
\e$B$N%j%9%H$K4p$E$$$F!"B>$N%W%m%0%i%`$,J*;v$r9T
\e(B
106 \e$B$J$&$3$H$r2DG=$K$9$k$3$H$G$9!#
\e(B
109 * Dissection:: @acronym{MIME}
\e$B%a%C%;!<%8$N2r@O
\e(B
110 * Non-MIME::
\e$BHs
\e(B-@acronym{MIME}
\e$B%a%C%;!<%8$N2r@O
\e(B
111 * Handles::
\e$B%O%s%I%k$N<h$j07$$
\e(B
112 * Display::
\e$B%O%s%I%k$NI=<(
\e(B
113 * Display Customization::
\e$BI=<($K1F6A$9$kJQ?t
\e(B
114 * Files and Directories::
\e$BE:IU%U%!%$%k$NJ]B8$HL?L>
\e(B
115 * New Viewers::
\e$B<+J,MQ%S%e!<%o!<$N=q$-J}
\e(B
119 @section
\e$B2rBN
\e(B
121 @code{mm-dissect-buffer}
\e$B$O
\e(B @acronym{MIME}
\e$B5-;v$N2rBN$rC4Ev$9$k4X?t$G$9!#
\e(B
122 \e$B%^%k%A%Q!<%H$N%a%C%;!<%8$,M?$($i$l$k$H!"%a%C%;!<%8$r:F5"E*$K7!$j2<$2!"9=
\e(B
123 \e$BB$$K=>$C$F!"$=$N%a%C%;!<%8$N9=B$$rIA<L$9$k
\e(B @acronym{MIME}
\e$B%O%s%I%k$NLZ9=
\e(B
124 \e$BB$$rJV$7$^$9!#
\e(B
127 @section
\e$BHs
\e(B-MIME
128 @vindex mm-uu-configure-list
130 Gnus
\e$B$O$$$/$D$+$NHs
\e(B-@acronym{MIME}
\e$B$NE:IU%U%!%$%k$bM}2r$7$^$9!#$=$l$i
\e(B
131 \e$B$O
\e(B postscript, uuencode, binhex, yenc, shar, forward, gnatsweb, pgp,
132 diff
\e$B$N$h$&$J$b$N$G$9!#$=$l$>$l$N5!G=$O
\e(B @code{mm-uu-configure-list}
\e$B$K9`
\e(B
133 \e$BL\$rDI2C$9$k$3$H$K$h$C$F!"L58z$K$9$k$3$H$,$G$-$^$9!#Nc$G$9!#
\e(B
137 (add-to-list 'mm-uu-configure-list '(pgp-signed . disabled))
143 \e$B%]%9%H%9%/%j%W%H$N%U%!%$%k!#
\e(B
147 Uuencode
\e$B$5$l$?%U%!%$%k!#
\e(B
151 Binhex
\e$B$G%(%s%3!<%I$5$l$?%U%!%$%k!#
\e(B
155 Yenc
\e$B$G%(%s%3!<%I$5$l$?%U%!%$%k!#
\e(B
159 Shar
\e$B=q8K%U%!%$%k!#
\e(B
163 \e$BHs
\e(B-@acronym{MIME}
\e$B$GE>Aw$5$l$?%a%C%;!<%8!#
\e(B
167 Gnatsweb
\e$B$NE:IU%U%!%$%k!#
\e(B
171 @acronym{PGP}
\e$B$G=pL>$5$l$?J?J8
\e(B (clear text)
\e$B!#
\e(B
174 @findex pgp-encrypted
175 @acronym{PGP}
\e$B$G0E9f2=$5$l$?J?J8
\e(B (clear text)
\e$B!#
\e(B
179 @acronym{PGP}
\e$B$N8x3+80!#
\e(B
182 @findex emacs-sources
183 @vindex mm-uu-emacs-sources-regexp
184 Emacs
\e$B$N%=!<%9%3!<%I!#$3$N9`L\$O
\e(B @code{mm-uu-emacs-sources-regexp}
\e$B$K9g
\e(B
185 \e$BCW$9$k%0%k!<%W$G$N$_F0:n$7$^$9!#
\e(B
189 @vindex mm-uu-diff-groups-regexp
190 \e$B%Q%C%A!#$3$l$O!"%3%_%C%H$5$l$?%U%!%$%k$N:9J,$,<+F0E*$KAw$i$l$k%0%k!<%W$r
\e(B
191 \e$BBP>]$K$7$?$b$N$G$9!#
\e(B@code{mm-uu-diff-groups-regexp}
\e$B$K9gCW$9$k%0%k!<%W$G
\e(B
192 \e$B$N$_F0:n$7$^$9!#
\e(B
196 @section
\e$B%O%s%I%k
\e(B
198 @acronym{MIME}
\e$B%O%s%I%k$O!"
\e(B@acronym{MIME}
\e$B$N9=@.MWAG$r40A4$K5-=R$9$k%j%9
\e(B
201 \e$B%O%s%I%k$NMWAG$r%"%/%;%9$9$k$?$a$K!"0J2<$N%^%/%m$r;H$&$3$H$,$G$-$^$9
\e(B:
204 @item mm-handle-buffer
205 @findex mm-handle-buffer
206 \e$B%G%3!<%I$5$l$F$$$J$$
\e(B @acronym{MIME}
\e$B%Q!<%H$NFbMFJ*$rJ];}$7$F$$$k%P%C%U%!
\e(B
210 @findex mm-handle-type
211 \e$B2r@O:Q$_$N!"%Q!<%H$N
\e(B @code{Content-Type}
\e$B$rJV$7$^$9!#
\e(B
213 @item mm-handle-encoding
214 @findex mm-handle-encoding
215 \e$B%Q!<%H$N
\e(B @code{Content-Transfer-Encoding}
\e$B$rJV$7$^$9!#
\e(B
217 @item mm-handle-undisplayer
218 @findex mm-handle-undisplayer
219 \e$BI=<($5$l$F$$$k%Q!<%H$r>C$9$3$H$,$G$-$k$b$N
\e(B (
\e$BLuCm
\e(B:
\e$B4X?t$J$I
\e(B)
\e$B$r
\e(B (
\e$B$=$l$,I=
\e(B
220 \e$B<($5$l$F$$$k>l9g$K
\e(B)
\e$BJV$7$^$9!#
\e(B
222 @item mm-handle-set-undisplayer
223 @findex mm-handle-set-undisplayer
224 \e$BI=<($5$l$F$$$k%Q!<%H$r>C$9$3$H$,$G$-$k$b$N
\e(B (
\e$BLuCm
\e(B:
\e$B4X?t$J$I
\e(B)
\e$B$r@_Dj$7$^$9!#
\e(B
226 @item mm-handle-disposition
227 @findex mm-handle-disposition
228 \e$B2r@O:Q$_$N!"%Q!<%H$N
\e(B @code{Content-Disposition}
\e$B$rJV$7$^$9!#
\e(B
230 @item mm-get-content-id
231 @code{Content-ID}
\e$B$G;2>H$5$l$k%O%s%I%k
\e(B (
\e$BC1?t$^$?$OJ#?t
\e(B)
\e$B$rJV$7$^$9!#
\e(B
235 @section
\e$BI=<(
\e(B
237 \e$BI=<($7!">C5n$7!"J]B8$9$k$?$a$N4X?t!#
\e(B
240 @item mm-display-part
241 @findex mm-display-part
242 \e$B%Q!<%H$rI=<($7$^$9!#
\e(B
245 @findex mm-remove-part
246 \e$B%Q!<%H$r
\e(B (
\e$B$=$l$,I=<($5$l$F$$$?$i
\e(B)
\e$B>C5n$7$^$9!#
\e(B
249 @findex mm-inlinable-p
250 @acronym{MIME}
\e$B%?%$%W$,%$%s%i%$%s$GI=<(2DG=$+$I$&$+$rJV$7$^$9!#
\e(B
252 @item mm-automatic-display-p
253 @findex mm-automatic-display-p
254 @acronym{MIME}
\e$B%?%$%W$,<+F0E*$KI=<($5$l$k$Y$-$+$I$&$+$rJV$7$^$9!#
\e(B
256 @item mm-destroy-part
257 @findex mm-destroy-part
258 \e$B%Q!<%H$K$h$C$F;H$o$l$F$$$k$9$Y$F$N;q8;$r3+J|$7$^$9
\e(B (
\e$BLuCm
\e(B:
\e$B%Q!<%H$NI=<(!"
\e(B
259 \e$B$*$h$S%Q!<%H$r2rBN$7$FF@$?8D!9$NItIJ$r0l;~E*$KJ];}$7$F$$$k%P%C%U%!$d%U%!
\e(B
260 \e$B%$%k$r>C5n$7$^$9
\e(B)
\e$B!#
\e(B
264 \e$B%Q!<%H$r%U%!%$%k$KJ]B8$7$^$9!#
\e(B
268 \e$B%Q!<%H$r$"$k%W%m%;%9$K%Q%$%W$7$^$9!#
\e(B
270 @item mm-interactively-view-part
271 @findex mm-interactively-view-part
272 \e$B%Q!<%H$rI=<($9$k$?$a$K;H$&
\e(B mailcap
\e$B$N<jCJ$r?R$M$^$9!#
\e(B
275 @node Display Customization
276 @section
\e$BI=<($N%+%9%?%^%$%:
\e(B
279 @item mm-inline-media-tests
280 @vindex mm-inline-media-tests
281 \e$B$3$l$OO"A[%j%9%H$G$9!#80
\e(B (
\e$BBh0lMWAG
\e(B)
\e$B$O
\e(B @acronym{MIME}
\e$B%?%$%W!"BhFsMWAG$O
\e(B
282 \e$B%Q!<%H$r
\e(B @dfn{
\e$B%$%s%i%$%s
\e(B}
\e$B$G
\e(B (
\e$B$9$J$o$A
\e(B Emacs
\e$B$N2hLL$KKd$a9~$s$G
\e(B)
\e$BI=<($9
\e(B
283 \e$B$k$?$a$N4X?t!"$=$7$FBh;0MWAG$O$=$N%Q!<%H$,%$%s%i%$%s$GI=<($9$k$3$H$,2DG=
\e(B
284 \e$B$+$I$&$+$rD4$Y$k$?$a$KI>2A
\e(B (@code{eval})
\e$B$5$l$k%U%)!<%`$G$9!#
\e(B
286 \e$B$3$NJQ?t$O!"$"$k%Q!<%H$,%$%s%i%$%sI=<(2DG=$+$I$&$+$H!"$b$72DG=$J$i$=$N$d
\e(B
287 \e$B$jJ}$r;XDj$7$^$9!#%Q!<%H$,8=<B$K%$%s%i%$%sI=<($5$l$F$$$k$+$I$&$+$r<($9$b
\e(B
288 \e$B$N$G$O$"$j$^$;$s!#
\e(B
290 @item mm-inlined-types
291 @vindex mm-inlined-types
292 \e$B0lJ}$3$l$O!">e5-$NJQ?t$K$h$C$F@_Dj$5$l$?>r7o$rK~B-$9$k!"%$%s%i%$%sI=<(2D
\e(B
293 \e$BG=$J%?%$%W$r<($7$^$9!#$3$l$O
\e(B @acronym{MIME}
\e$B%a%G%#%"%?%$%W$N%j%9%H$G$9!#
\e(B
294 (
\e$BLuCm
\e(B:
\e$B$=$l$>$l$NMWAG$O@55,I=8=$G$9!#
\e(B)
296 @item mm-automatic-display
297 @vindex mm-automatic-display
298 \e$B$3$l$O>e5-$NJQ?t$,G'$a$k%?%$%W$N$&$A$G!"!V<+F0E*!W$KI=<($5$l$k%?%$%W$N%j
\e(B
299 \e$B%9%H$G$9!#$D$^$j!"%$%s%i%$%sI=<($,2DG=$J%Q!<%H$@$1$,<+F0E*$KI=<($5$l$^$9!#
\e(B
301 @item mm-automatic-external-display
302 @vindex mm-automatic-external-display
303 \e$B$3$l$O30It%S%e!<%o!<$G<+F0E*$KI=<($5$l$k%?%$%W$N%j%9%H$G$9!#
\e(B
305 @item mm-keep-viewer-alive-types
306 @vindex mm-keep-viewer-alive-types
307 \e$B$3$l$O!"JL$N5-;v$rA*Br$7$F$b!"30It%S%e!<%o!<$,
\e(B kill
\e$B$5$l$J$$%a%G%#%"%?%$
\e(B
308 \e$B%W$N%j%9%H$G$9!#
\e(B
310 \e$BLuCm
\e(B: postscript
\e$B$d
\e(B dvi
\e$B$J$I
\e(B (
\e$BJQ?t$N%G%#%U%)%k%HCM$r;2>H$N$3$H
\e(B)
\e$B$N$h$&$K!"
\e(B
311 \e$BFI$`$N$K;~4V$,$+$+$k$+$b$7$l$J$$%Q!<%H$N%?%$%W$r4^$`%j%9%H$G$9!#0lJ}!"$3
\e(B
312 \e$B$l$K4^$^$l$J$$C1=c$J2hA|$N%Q!<%H$J$I$O!"$=$l$,4^$^$l$F$$$?5-;v$NI=<($r$d
\e(B
313 \e$B$a$?$H$-$K!"<+F0E*$K30It%S%e!<%o!<$,
\e(B kill
\e$B$5$l$^$9!#
\e(B
315 @item mm-attachment-override-types
316 @vindex mm-attachment-override-types
317 \e$B$$$/$D$+$N
\e(B @acronym{MIME}
\e$B%(!<%8%'%s%H$O!"G[CV;X
\e(B
318 \e$BDj
\e(B (content-disposition)
\e$B$H$7$F
\e(B @samp{
\e$BE:IU
\e(B} (@samp{attachment})
\e$B%U%!%$%k
\e(B
319 \e$B$G$"$k$3$H$r@_Dj$7$?%Q!<%H$r@8@.$7$^$9!#$3$NJQ?t$O$=$s$JG[CV;XDj$r>e=q$-
\e(B
320 \e$B$7$F!"$=$N%Q!<%H$r%$%s%i%$%sI=<($9$k$3$H$r5v$7$^$9!#
\e(B(
\e$B$=$N%Q!<%H$N%$%s%i
\e(B
321 \e$B%$%sI=<($9$k$3$H$,2DG=$G!";d$?$A$,$=$&$9$k$3$H$rK>$`>l9g$@$1!"G[CV;XDj$,
\e(B
322 \e$B>e=q$-$5$l$k$3$H$KCm0U$7$F2<$5$$!#
\e(B)
324 @item mm-discouraged-alternatives
325 @vindex mm-discouraged-alternatives
326 @samp{multipart/alternative}
\e$B$rI=<($9$k$3$H$,7y$o$l$k
\e(B @acronym{MIME}
\e$B%?
\e(B
327 \e$B%$%W$N%j%9%H$G$9!#$=$l$,:G$b6=L#?<$$$b$N$G$"$k$HA[Dj$7$F$$$k$?$a$K!"I=<(
\e(B
328 \e$B%(!<%8%'%s%H$O%a%C%;!<%8$N8eH>$K$"$k2D;k$J%Q!<%H$rI=<($9$k$3$H$K$J$C$F$$
\e(B
329 \e$B$^$9!#$7$+$7!"%f!<%6!<$OBe$o$j$KB>$N%?%$%W$r9%$`$+$b$7$l$^$;$s!#$3$N%j%9
\e(B
330 \e$B%H$O!"2?$N%?%$%W$,:G$bK>$^$l$J$$$+$r<($7$^$9!#Nc$($P$b$7!"
\e(B
331 @samp{text/html}
\e$B%Q!<%H$OHs>o$KK>$^$:!"$+$D
\e(B @samp{text/richtext}
\e$B%Q!<%H
\e(B
332 \e$B$r$d$dK>$^$J$$$H$$$&$3$H$G$"$l$P!"0J2<$N$h$&$K@k8@$9$k$3$H$,$G$-$^$9
\e(B:
335 (setq mm-discouraged-alternatives
336 '("text/html" "text/richtext")
338 (remove "text/html" mm-automatic-display))
341 @item mm-inline-large-images
342 @vindex mm-inline-large-images
343 \e$B%&%#%s%I%&$h$jBg$-$J%$%s%i%$%s2hA|$rI=<($9$k$H!"
\e(BEmacs
\e$B$O%9%/%m!<%k$9$k$3
\e(B
344 \e$B$H$,$G$-$J$$!"$D$^$j2hA|$NA4BN$r8+$k$3$H$,$G$-$^$;$s!#$3$l$rHr$1$k$?$a!"
\e(B
345 \e$B%i%$%V%i%j!<$O$=$l$r%$%s%i%$%sI=<($9$kA0$K2hA|$N%5%$%:$r7W$C$F!"$=$l$,
\e(B
346 \e$B%&%#%s%I%&$K9g$o$J$$>l9g$O!"%i%$%V%i%j!<$O$=$l$r30It$G
\e(B (
\e$BNc$(
\e(B
347 \e$B$P
\e(B @samp{ImageMagick}
\e$B$d
\e(B @samp{xv}
\e$B$G
\e(B)
\e$BI=<($7$^$9!#$3$NJQ?t
\e(B
348 \e$B$r
\e(B @code{t}
\e$B$K@_Dj$9$k$H$3$N8!::$r$5$;$J$/$7$F!"%i%$%V%i%j!<$K$9$Y$F$N%$
\e(B
349 \e$B%s%i%$%s2hA|$r%5%$%:$K4X$o$j$J$/%$%s%i%$%s$GI=<($5$;$^$9!#
\e(B
351 @item mm-inline-override-types
352 @vindex mm-inline-override-types
353 @code{mm-inlined-types}
\e$B$O!"Nc$($P$9$Y$F$N
\e(B @samp{text/.*}
\e$B%Q!<%H$r%$%s%i
\e(B
354 \e$B%$%s$GI=<($9$k$3$H$r;X<($9$k$h$&$J!"@55,I=8=$r4^$`$3$H$,$G$-$^$9!#0lJ}!"
\e(B
355 \e$B%$%s%i%$%sI=<($,2DG=$@$1$l$I$bE:IU%U%!%$%k$H$7$F07$$$?$$%?%$%W$,$"$k$J$i
\e(B
356 \e$B$P!"$=$N%?%$%W$K9gCW$9$k@55,I=8=$N%j%9%H$r!"$3$NJQ?t$K@_Dj$9$k$3$H$K$h$C
\e(B
357 \e$B$F@.$7?k$2$k$3$H$,$G$-$^$9!#Nc$(
\e(B
358 \e$B$P
\e(B @code{mm-inlined-types}
\e$B$,
\e(B @samp{text/.*}
\e$B$r4^$s$G$$$k$b$N$H$9$k$H!"
\e(B
359 \e$B$3$NJQ?t$K
\e(B @samp{text/html}
\e$B$r4^$^$;$k$3$H$K$h$C$F!"
\e(B@samp{text/html}
\e$B%Q!<
\e(B
360 \e$B%H$OE:IU%U%!%$%k$H$7$F07$o$l$k$h$&$K$J$j$^$9!#
\e(B
362 @item mm-text-html-renderer
363 @vindex mm-text-html-renderer
364 @acronym{HTML}
\e$B$rIA2h$9$k$?$a$K;H$&4X?t$rA*Br$7$^$9!#$9$G$KMQ0U$7$F$"$k
\e(B
365 \e$BIA2h%W%m%0%i%`$O!"
\e(B@code{w3}, @code{w3m}@footnote{emacs-w3m
\e$B$K$D$$$F$N>\
\e(B
366 \e$B:Y$O
\e(B @uref{http://emacs-w3m.namazu.org/}
\e$B$r8+$F2<$5$$!#
\e(B}, @code{links},
367 @code{lynx}, @code{w3m-standalone}
\e$B$^$?$O
\e(B @code{html2text}
\e$B$N%7%s%\%k72
\e(B
368 \e$B$N$&$A$N0l$D$r;XDj$9$k$3$H$K$h$C$FA*Br$7$^$9!#$b$7
\e(B @code{nil}
\e$B$@$C$?$i!"
\e(B
369 \e$B30It%S%e!<%o!<$r;H$$$^$9!#$5$i$K4X?t
\e(B (
\e$B0z?t$H$7$F
\e(B @acronym{MIME}
\e$B%O%s%I%k
\e(B
370 \e$B$,M?$($i$l$F8F$P$l$k
\e(B)
\e$B$r@_Dj$9$k$3$H$b$G$-$^$9!#
\e(B
372 @item mm-inline-text-html-with-images
373 @vindex mm-inline-text-html-with-images
374 @acronym{HTML}
\e$B%a!<%k$K$O
\e(B @samp{<img>}
\e$B%?%0$r;H$C$?
\e(B spammers (spam
\e$B$r$P
\e(B
375 \e$B$i$^$/$d$+$i
\e(B)
\e$B$NH\Nt$J0-9*$_$,4^$^$l$F$$$k$+$b$7$l$^$;$s!#:G$b$"$j$=$&$J
\e(B
376 \e$B$N$O!"$"$J$?$,$=$N%a!<%k$rFI$s$@$3$H$r3NG'$9$k$?$a$N0U?^$,$"$k$3$H$G$9!#
\e(B
377 \e$B$3$N%*%W%7%g%s$r
\e(B @code{nil}
\e$B$K@_Dj$9$k
\e(B (
\e$B$=$l$,%G%#%U%)%k%H$G$9
\e(B)
\e$B$3$H$K$h$C
\e(B
378 \e$B$F!"$"$J$?$N8D?M>pJs$,N.=P$9$k$N$rKI$0$3$H$,$G$-$^$9!#8=:_
\e(B Emacs/w3
\e$B$O!"
\e(B
379 \e$B$3$l$rL5;k$7$^$9!#
\e(BEmacs-w3m
\e$B$G$O!"$3$l$,
\e(B @code{nil}
\e$B$G$"$C$F$b!"2hA|$rI=
\e(B
380 \e$B<($9$k$?$a$K!"$=$l$,Kd$a9~$^$l$?>l=j$G
\e(B @kbd{t}
\e$B%3%^%s%I$r;H$&$3$H$,$G$-
\e(B
381 \e$B$^$9!#
\e(B@footnote{@kbd{T}
\e$B%3%^%s%I$O$9$Y$F$N2hA|$r<h$j9~$_$^$9!#
\e(B
382 @code{w3m-key-binding}
\e$B%*%W%7%g%s$r
\e(B @code{info}
\e$B$K@_Dj$7$?$J$i$P!"Be$o$j
\e(B
383 \e$B$K
\e(B @kbd{i}
\e$B$+
\e(B @kbd{I}
\e$B$r;H$C$F2<$5$$!#
\e(B}
385 @item mm-w3m-safe-url-regexp
386 @vindex mm-w3m-safe-url-regexp
387 \e$B0BA4$J
\e(B URL
\e$BL>!"$9$J$o$A
\e(B @acronym{HTML}
\e$B%a!<%k$rIA2h$9$k$H$-$K8D?M>pJs$,
\e(B
388 \e$BN.=P$7$=$&$b$J$$
\e(B URL
\e$B$K9gCW$9$k@55,I=8=$G$9
\e(B (
\e$B%G%#%U%)%k%HCM
\e(B
389 \e$B$O
\e(B @samp{\\`cid:}
\e$B$G$9
\e(B)
\e$B!#
\e(B@code{nil}
\e$B$G$"$k$H!"$9$Y$F$N
\e(B URL
\e$B$,0BA4$@$HH=
\e(B
392 @item mm-inline-text-html-with-w3m-keymap
393 @vindex mm-inline-text-html-with-w3m-keymap
394 \e$B$3$N%*%W%7%g%s$rHs
\e(B-@code{nil}
\e$B$K@_Dj$9$k$3$H$K$h$C$F!"%$%s%i%$%sI=<($5$l
\e(B
395 \e$B$?
\e(B text/html
\e$B%Q!<%H$G
\e(B emacs-w3m
\e$B$N%3%^%s%I%-!<$r;H$&$3$H$,$G$-$^$9!#%G%#
\e(B
396 \e$B%U%)%k%HCM$O
\e(B @code{t}
\e$B$G$9!#
\e(B
398 @item mm-external-terminal-program
399 @vindex mm-external-terminal-program
400 \e$B30It$NC<Kv$r5/F0$9$k$?$a$K;H$o$l$k%W%m%0%i%`$G$9!#
\e(B
402 @item mm-enable-external
403 @vindex mm-enable-external
404 \e$B30It$N
\e(B @acronym{MIME}
\e$B%O%s%I%i!<$r;H$&$Y$-$+$I$&$+$r;XDj$7$^$9!#
\e(B
406 @code{t}
\e$B$G$"$k$H!"Dj5A$5$l$?$9$Y$F$N30It$N
\e(B @acronym{MIME}
\e$B%O%s%I%i!<$,
\e(B
407 \e$B;H$o$l$^$9!#
\e(B@code{nil}
\e$B$@$C$?$i!"%U%!%$%k$O%G%#%9%/$KJ]B8$5$l$^
\e(B
408 \e$B$9
\e(B (@code{mailcap-save-binary-file})
\e$B!#$3$l$,
\e(B @code{ask}
\e$B$H$$$&%7%s%\%k$G
\e(B
409 \e$B$"$C$?$J$i$P!"30It$N
\e(B @acronym{MIME}
\e$B%O%s%I%i!<$,5/F0$5$l$kA0$K?R$M$i$l$k
\e(B
412 Mailcap (@pxref{mailcap})
\e$B$r2p$7$FE:IU%U%!%$%k$NI=<($r;O$a$k$H!":G$b0BA4
\e(B
413 \e$B$J%*%W%7%g%s$G0BA4$J%S%e!<%o!<$r;H$&$3$H$r;n$_$^$9
\e(B (
\e$BE:IU%U%!%$%k$r%G%#%9
\e(B
414 \e$B%/$KJ]B8$7$F!"0[$J$k<jCJ
\e(B (
\e$B%3%^%s%I%i%$%s$+%@%V%k%/%j%C%/
\e(B)
\e$B$G$=$NI=<($r;O
\e(B
415 \e$B$a$k>l9g$H$O0c$$$^$9
\e(B)
\e$B!#$H$K$+$/!"$I$s$J30It%W%m%0%i%`$b;H$$$?$/$J$$$N$G
\e(B
416 \e$B$"$l$P!"$3$NJQ?t$r
\e(B @code{nil}
\e$B$+
\e(B @code{ask}
\e$B$K@_Dj$7$F2<$5$$!#
\e(B
419 @node Files and Directories
420 @section
\e$B%U%!%$%k$H%G%#%l%/%H%j!<
\e(B
423 @item mm-default-directory
424 @vindex mm-default-directory
425 \e$BE:IU%U%!%$%k$rJ]B8$9$k%G%#%U%)%k%H$N%G%#%l%/%H%j!<$G$9!#
\e(B@code{nil}
\e$B$@$C
\e(B
426 \e$B$?$i
\e(B @code{default-directory}
\e$B$r;H$$$^$9!#
\e(B
428 @item mm-tmp-directory
429 @vindex mm-tmp-directory
430 \e$B0l;~%U%!%$%k$r3JG<$9$k%G%#%l%/%H%j!<$G$9!#
\e(B
432 @item mm-file-name-rewrite-functions
433 @vindex mm-file-name-rewrite-functions
434 @acronym{MIME}
\e$B%Q!<%H$N%U%!%$%kL>$r=q$-49$($k$?$a$K;H$o$l$k4X?t$N%j%9%H
\e(B
435 \e$B$G$9!#$=$l$>$l$N4X?t$O%U%!%$%kL>$r<u$1<h$C$F!"%U%!%$%kL>$rJV$7$^$9!#=PMh
\e(B
436 \e$B9g$$$N4X?t$O0J2<$NDL$j$G$9!#
\e(B
439 @item mm-file-name-delete-control
440 @findex mm-file-name-delete-control
441 \e$B$9$Y$F$N@)8fJ8;z$r>C5n$7$^$9!#
\e(B
443 @item mm-file-name-delete-gotchas
444 @findex mm-file-name-delete-gotchas
445 \e$B<e$_$,$"$k%7%'%k%9%/%j%W%H$G;H$o$l$k$H0U?^$7$J$$7k2L$r@8$8$kJ8;z!"$9$J$o
\e(B
446 \e$B$A
\e(B @samp{|}, @samp{>}
\e$B$*$h$S
\e(B @samp{<}
\e$B!"2C$($F:G=i$NJ8;z$H$7$F;H$o$l
\e(B
447 \e$B$k
\e(B @samp{-}
\e$B$H
\e(B @samp{.}
\e$B$r>C5n$7$^$9!#
\e(B
449 @item mm-file-name-delete-whitespace
450 @findex mm-file-name-delete-whitespace
451 \e$B$9$Y$F$N6uGrJ8;z$r<h$j=|$-$^$9!#
\e(B
453 @item mm-file-name-trim-whitespace
454 @findex mm-file-name-trim-whitespace
455 \e$B@hF,$HKvHx$N6uGrJ8;z$r<h$j=|$-$^$9!#
\e(B
457 @item mm-file-name-collapse-whitespace
458 @findex mm-file-name-collapse-whitespace
459 \e$BJ#?t$NO"B3$7$?6uGrJ8;z$rC10l$N%9%Z!<%9J8;z$GCV$-49$($^$9!#
\e(B
461 @item mm-file-name-replace-whitespace
462 @findex mm-file-name-replace-whitespace
463 @vindex mm-file-name-replace-whitespace
464 \e$B6uGrJ8;z$r2<@~
\e(B (underscores)
\e$B$GCV$-49$($^$9!#2<@~$,$*9%$_$G$J$1$l$P!"B>
\e(B
465 \e$B$NJ8;z$r
\e(B @code{mm-file-name-replace-whitespace}
\e$BJQ?t$K@_Dj$7$F2<$5$$!#
\e(B
468 Emacs
\e$BI8=`$N4X?t$G$"$k
\e(B @code{capitalize}, @code{downcase},
469 @code{upcase}
\e$B$*$h$S
\e(B @code{upcase-initials}
\e$B$b!"LrN)$D$3$H$OL@$i$+$G$9!#
\e(B
471 @item mm-path-name-rewrite-functions
472 @vindex mm-path-name-rewrite-functions
473 @acronym{MIME}
\e$B%Q!<%H$N%U%k!&%U%!%$%kL>$r=q$-49$($k$?$a$K;H$o$l$k4X?t$N
\e(B
474 \e$B%j%9%H$G$9!#$3$l$O%Q!<%H$r30It$KI=<($9$k$H$-
\e(B (
\e$B$9$J$o$A!"M;DL$N8z$+$J$$%W
\e(B
475 \e$B%m%0%i%`$,!"%U%!%$%k$,J]B8$5$l$?>l=j$r8+$D$1$k$3$H$,$G$-$k$h$&$K!"@dBP%Q
\e(B
476 \e$B%9L>$rJQ49$9$k$?$a
\e(B)
\e$B$K;H$o$l$^$9!#
\e(B
480 @section
\e$B?7$7$$%S%e!<%o!<
\e(B
482 \e$B$3$l$O
\e(B @code{text/enriched}
\e$B%Q!<%H$r%$%s%i%$%sI=<($9$k%S%e!<%o!<$NNc$G$9
\e(B:
485 (defun mm-display-enriched-inline (handle)
488 (mm-insert-part handle)
489 (save-window-excursion
490 (enriched-decode (point-min) (point-max))
491 (setq text (buffer-string))))
492 (mm-insert-inline handle text)))
495 \e$B$3$N4X?t$,%Q%i%a!<%?$H$7$F
\e(B @acronym{MIME}
\e$B%O%s%I%k$r<u$1<h$k$3$H$,$o$+$j
\e(B
496 \e$B$^$9$M!#$=$l$O0l;~%P%C%U%!$K:n6H>l=j$r0\$7!"%Q!<%H$N%F%-%9%H$rA^F~$7!"$=
\e(B
497 \e$B$N%F%-%9%H$K$"$k=hM}$r;\$7!"7k2L$r3P$($F$*$$$F!"4X?t$,8F$P$l$?$H$-$N%P%C
\e(B
498 \e$B%U%!$KLa$C$F$=$N7k2L$rA^F~$7$^$9!#
\e(B
500 \e$B$3$3$K$"$kFs$D$N=EMW$J$*=u$14X?t
\e(B
501 \e$B$O
\e(B @code{mm-insert-part}
\e$B$H
\e(B @code{mm-insert-inline}
\e$B$G$9!#:G=i$N4X?t$O!"
\e(B
502 \e$B%O%s%I%k$N%F%-%9%H$r8=:_$N%P%C%U%!$KA^F~$7$^$9!#$3$l$OJ8;z%;%C%H$*$h$S%(
\e(B
503 \e$B%s%3!<%G%#%0
\e(B (content transfer decoding)
\e$B$r<h$j07$$$^$9!#FsHVL\$N4X?t$O!"
\e(B
504 \e$BA^F~$7$m$H8@$C$?$I$s$J%F%-%9%H$G$bC1$KA^F~$7$^$9$,!"%F%-%9%H$r<j7Z$JJ}K!
\e(B
505 \e$B$G!VI=<($5$l$J$/$9$k
\e(B (undisplayed)
\e$B!W$3$H$,$G$-$k$h$&$J=t@_Dj$r$b9T$J$$$^
\e(B
509 @chapter MIME
\e$B%a%C%;!<%8$N:n@.
\e(B
511 @cindex MIME Composing
513 @cindex MIME Meta Language
515 @acronym{MIME}
\e$B%a%C%;!<%8$N:n@.$OB`6~$J;E;v$@$74JC1$G$b$"$j$^$;$s!#$=$3
\e(B
516 \e$B$G!"
\e(B@acronym{MML} (@acronym{MIME} Meta Language)
\e$B$H$$$&!"8@8l$r2r@O$7
\e(B
517 \e$B$F
\e(B @acronym{MIME}
\e$B%a%C%;!<%8$r@8@.$9$k!"
\e(B@code{mml}
\e$B$H$$$&%i%$%V%i%j!<$,
\e(B
518 \e$B:n$i$l$^$7$?!#
\e(B
520 @findex mml-generate-mime
521 \e$B<gMW$J%$%s%?!<%U%'!<%94X?t$O
\e(B @code{mml-generate-mime}
\e$B$G$9!#$3$l$O8=:_
\e(B
522 \e$B$N
\e(B (
\e$B69$a$i$l$?
\e(B)
\e$B%P%C%U%!$NFbMFJ*$rD4$Y$F!"
\e(B@acronym{MIME}
\e$B%a%C%;!<%8$r4^
\e(B
523 \e$B$`J8;zNs$rJV$7$^$9!#
\e(B
526 * Simple MML Example:: @acronym{MML}
\e$BJ8=q$NNc
\e(B
527 * MML Definition::
\e$B$9$Y$F$NM-8z$J
\e(B @acronym{MML}
\e$BMWAG
\e(B
528 * Advanced MML Example::
\e$B$b$&0l$D$N
\e(B @acronym{MML}
\e$BJ8=q$NNc
\e(B
529 * Encoding Customization::
\e$B%(%s%3!<%G%#%s%0$K:nMQ$9$kJQ?t
\e(B
530 * Charset Translation:: @sc{mule}
\e$BJ8;z%;%C%H$+$i
\e(B @acronym{MIME}
\e$BJ8;z%;%C%H$X$N3d$jEv$F
\e(B
531 * Conversion:: @acronym{MIME}
\e$B$+$i
\e(B @acronym{MML}
\e$B$X!"$*$h$S$=$N5U
\e(B
532 * Flowed text::
\e$B%=%U%H$*$h$S%O!<%I2~9T
\e(B
535 @node Simple MML Example
536 @section Simple MML Example
538 Here's a simple @samp{multipart/alternative}:
541 <#multipart type=alternative>
542 This is a plain text part.
543 <#part type=text/enriched>
544 <center>This is a centered enriched part</center>
548 After running this through @code{mml-generate-mime}, we get this:
551 Content-Type: multipart/alternative; boundary="=-=-="
557 This is a plain text part.
560 Content-Type: text/enriched
563 <center>This is a centered enriched part</center>
570 @section MML Definition
572 The @acronym{MML} language is very simple. It looks a bit like an SGML
573 application, but it's not.
575 The main concept of @acronym{MML} is the @dfn{part}. Each part can be of a
576 different type or use a different charset. The way to delineate a part
577 is with a @samp{<#part ...>} tag. Multipart parts can be introduced
578 with the @samp{<#multipart ...>} tag. Parts are ended by the
579 @samp{<#/part>} or @samp{<#/multipart>} tags. Parts started with the
580 @samp{<#part ...>} tags are also closed by the next open tag.
582 There's also the @samp{<#external ...>} tag. These introduce
583 @samp{external/message-body} parts.
585 Each tag can contain zero or more parameters on the form
586 @samp{parameter=value}. The values may be enclosed in quotation marks,
587 but that's not necessary unless the value contains white space. So
588 @samp{filename=/home/user/#hello$^yes} is perfectly valid.
590 The following parameters have meaning in @acronym{MML}; parameters that have no
591 meaning are ignored. The @acronym{MML} parameter names are the same as the
592 @acronym{MIME} parameter names; the things in the parentheses say which
593 header it will be used in.
597 The @acronym{MIME} type of the part (@code{Content-Type}).
600 Use the contents of the file in the body of the part
601 (@code{Content-Disposition}).
604 The contents of the body of the part are to be encoded in the character
605 set specified (@code{Content-Type}). @xref{Charset Translation}.
608 Might be used to suggest a file name if the part is to be saved
609 to a file (@code{Content-Type}).
612 Valid values are @samp{inline} and @samp{attachment}
613 (@code{Content-Disposition}).
616 Valid values are @samp{7bit}, @samp{8bit}, @samp{quoted-printable} and
617 @samp{base64} (@code{Content-Transfer-Encoding}). @xref{Charset
621 A description of the part (@code{Content-Description}).
624 RFC822 date when the part was created (@code{Content-Disposition}).
626 @item modification-date
627 RFC822 date when the part was modified (@code{Content-Disposition}).
630 RFC822 date when the part was read (@code{Content-Disposition}).
633 Who to encrypt/sign the part to. This field is used to override any
634 auto-detection based on the To/CC headers.
637 Identity used to sign the part. This field is used to override the
641 The size (in octets) of the part (@code{Content-Disposition}).
644 What technology to sign this @acronym{MML} part with (@code{smime}, @code{pgp}
648 What technology to encrypt this @acronym{MML} part with (@code{smime},
649 @code{pgp} or @code{pgpmime})
653 Parameters for @samp{text/plain}:
657 Formatting parameter for the text, valid values include @samp{fixed}
658 (the default) and @samp{flowed}. Normally you do not specify this
659 manually, since it requires the textual body to be formatted in a
660 special way described in RFC 2646. @xref{Flowed text}.
663 Parameters for @samp{application/octet-stream}:
667 Type of the part; informal---meant for human readers
668 (@code{Content-Type}).
671 Parameters for @samp{message/external-body}:
675 A word indicating the supported access mechanism by which the file may
676 be obtained. Values include @samp{ftp}, @samp{anon-ftp}, @samp{tftp},
677 @samp{localfile}, and @samp{mailserver}. (@code{Content-Type}.)
680 The RFC822 date after which the file may no longer be fetched.
681 (@code{Content-Type}.)
684 The size (in octets) of the file. (@code{Content-Type}.)
687 Valid values are @samp{read} and @samp{read-write}
688 (@code{Content-Type}).
692 Parameters for @samp{sign=smime}:
697 File containing key and certificate for signer.
701 Parameters for @samp{encrypt=smime}:
706 File containing certificate for recipient.
711 @node Advanced MML Example
712 @section Advanced MML Example
714 Here's a complex multipart message. It's a @samp{multipart/mixed} that
715 contains many parts, one of which is a @samp{multipart/alternative}.
718 <#multipart type=mixed>
719 <#part type=image/jpeg filename=~/rms.jpg disposition=inline>
720 <#multipart type=alternative>
721 This is a plain text part.
722 <#part type=text/enriched name=enriched.txt>
723 <center>This is a centered enriched part</center>
725 This is a new plain text part.
726 <#part disposition=attachment>
727 This plain text part is an attachment.
731 And this is the resulting @acronym{MIME} message:
734 Content-Type: multipart/mixed; boundary="=-=-="
742 Content-Type: image/jpeg;
744 Content-Disposition: inline;
746 Content-Transfer-Encoding: base64
748 /9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAgGBgcGBQgHBwcJCQgKDBQNDAsLDBkSEw8UHRof
749 Hh0aHBwgJC4nICIsIxwcKDcpLDAxNDQ0Hyc5PTgyPC4zNDL/wAALCAAwADABAREA/8QAHwAA
750 AQUBAQEBAQEAAAAAAAAAAAECAwQFBgcICQoL/8QAtRAAAgEDAwIEAwUFBAQAAAF9AQIDAAQR
751 BRIhMUEGE1FhByJxFDKBkaEII0KxwRVS0fAkM2JyggkKFhcYGRolJicoKSo0NTY3ODk6Q0RF
752 RkdISUpTVFVWV1hZWmNkZWZnaGlqc3R1dnd4eXqDhIWGh4iJipKTlJWWl5iZmqKjpKWmp6ip
753 qrKztLW2t7i5usLDxMXGx8jJytLT1NXW19jZ2uHi4+Tl5ufo6erx8vP09fb3+Pn6/9oACAEB
754 AAA/AO/rifFHjldNuGsrDa0qcSSHkA+gHrXKw+LtWLrMb+RgTyhbr+HSug07xNqV9fQtZrNI
755 AyiaE/NuBPOOOP0rvRNE880KOC8TbXXGCv1FPqjrF4LDR7u5L7SkTFT/ALWOP1xXgTuXfc7E
756 sx6nua6rwp4IvvEM8chCxWxOdzn7wz6V9AaB4S07w9p5itow0rDLSY5Pt9K43xO66P4xs71m
757 2QXiGCbA4yOVJ9+1aYORkdK434lyNH4ahCnG66VT9Nj15JFbPdX0MS43M4VQf5/yr2vSpLnw
758 5ZW8dlCZ8KFXjOPX0/mK6rSPEGt3Angu44fNEReHYNvIH3TzXDeKNO8RX+kSX2ouZkicTIOc
759 L+g7E810ulFjpVtv3bwgB3HJyK5L4quY/C9sVxk3ij/xx6850u7t1mtp/wDlpEw3An3Jr3Dw
760 34gsbWza4nBlhC5LDsaW6+IFgupQyCF3iHH7gA7c9R9ay7zx6t7aX9jHC4smhfBkGCvHGfrm
761 tLQ7hbnRrV1GPkAP1x1/Hr+Ncr8Vzjwrbf8AX6v/AKA9eQRyYlQk8Yx9K6XTNbkgia2ciSIn
762 7p5Ga9Atte0LTLKO6it4i7dVRFJDcZ4PvXN+JvEMF9bILVGXJLSZ4zkjivRPDaeX4b08HOTC
763 pOffmua+KkbS+GLVUGT9tT/0B68eeIpIFYjB70+OOVXyoOM9+M1eaWeCLzHPyHGO/NVWvJJm
764 jQ8KGH1NfQWhXSXmh2c8eArRLwO3HSv/2Q==
767 Content-Type: multipart/alternative; boundary="==-=-="
773 This is a plain text part.
776 Content-Type: text/enriched;
780 <center>This is a centered enriched part</center>
786 This is a new plain text part.
789 Content-Disposition: attachment
792 This plain text part is an attachment.
797 @node Encoding Customization
798 @section Encoding Customization
802 @item mm-body-charset-encoding-alist
803 @vindex mm-body-charset-encoding-alist
804 Mapping from @acronym{MIME} charset to encoding to use. This variable is
805 usually used except, e.g., when other requirements force a specific
806 encoding (digitally signed messages require 7bit encodings). The
810 ((iso-2022-jp . 7bit)
811 (iso-2022-jp-2 . 7bit)
817 As an example, if you do not want to have ISO-8859-1 characters
818 quoted-printable encoded, you may add @code{(iso-8859-1 . 8bit)} to
819 this variable. You can override this setting on a per-message basis
820 by using the @code{encoding} @acronym{MML} tag (@pxref{MML Definition}).
822 @item mm-coding-system-priorities
823 @vindex mm-coding-system-priorities
824 Prioritize coding systems to use for outgoing messages. The default
825 is @code{nil}, which means to use the defaults in Emacs. It is a list of
826 coding system symbols (aliases of coding systems are also allowed, use
827 @kbd{M-x describe-coding-system} to make sure you are specifying correct
828 coding system names). For example, if you have configured Emacs
829 to prefer UTF-8, but wish that outgoing messages should be sent in
830 ISO-8859-1 if possible, you can set this variable to
831 @code{(iso-8859-1)}. You can override this setting on a per-message
832 basis by using the @code{charset} @acronym{MML} tag (@pxref{MML Definition}).
834 @item mm-content-transfer-encoding-defaults
835 @vindex mm-content-transfer-encoding-defaults
836 Mapping from @acronym{MIME} types to encoding to use. This variable is usually
837 used except, e.g., when other requirements force a safer encoding
838 (digitally signed messages require 7bit encoding). Besides the normal
839 @acronym{MIME} encodings, @code{qp-or-base64} may be used to indicate that for
840 each case the most efficient of quoted-printable and base64 should be
843 @code{qp-or-base64} has another effect. It will fold long lines so that
844 MIME parts may not be broken by MTA. So do @code{quoted-printable} and
847 Note that it affects body encoding only when a part is a raw forwarded
848 message (which will be made by @code{gnus-summary-mail-forward} with the
849 arg 2 for example) or is neither the @samp{text/*} type nor the
850 @samp{message/*} type. Even though in those cases, you can override
851 this setting on a per-message basis by using the @code{encoding}
852 @acronym{MML} tag (@pxref{MML Definition}).
854 @item mm-use-ultra-safe-encoding
855 @vindex mm-use-ultra-safe-encoding
856 When this is non-@code{nil}, it means that textual parts are encoded as
857 quoted-printable if they contain lines longer than 76 characters or
858 starting with "From " in the body. Non-7bit encodings (8bit, binary)
859 are generally disallowed. This reduce the probability that a non-8bit
860 clean MTA or MDA changes the message. This should never be set
861 directly, but bound by other functions when necessary (e.g., when
862 encoding messages that are to be digitally signed).
866 @node Charset Translation
867 @section Charset Translation
870 During translation from @acronym{MML} to @acronym{MIME}, for each
871 @acronym{MIME} part which has been composed inside Emacs, an appropriate
872 charset has to be chosen.
874 @vindex mail-parse-charset
875 If you are running a non-@sc{mule} Emacs, this process is simple: If the
876 part contains any non-@acronym{ASCII} (8-bit) characters, the @acronym{MIME} charset
877 given by @code{mail-parse-charset} (a symbol) is used. (Never set this
878 variable directly, though. If you want to change the default charset,
879 please consult the documentation of the package which you use to process
880 @acronym{MIME} messages.
881 @xref{Various Message Variables, , Various Message Variables, message,
882 Message Manual}, for example.)
883 If there are only @acronym{ASCII} characters, the @acronym{MIME} charset US-ASCII is
889 @vindex mm-mime-mule-charset-alist
890 Things are slightly more complicated when running Emacs with @sc{mule}
891 support. In this case, a list of the @sc{mule} charsets used in the
892 part is obtained, and the @sc{mule} charsets are translated to @acronym{MIME}
893 charsets by consulting the variable @code{mm-mime-mule-charset-alist}.
894 If this results in a single @acronym{MIME} charset, this is used to encode
895 the part. But if the resulting list of @acronym{MIME} charsets contains more
896 than one element, two things can happen: If it is possible to encode the
897 part via UTF-8, this charset is used. (For this, Emacs must support
898 the @code{utf-8} coding system, and the part must consist entirely of
899 characters which have Unicode counterparts.) If UTF-8 is not available
900 for some reason, the part is split into several ones, so that each one
901 can be encoded with a single @acronym{MIME} charset. The part can only be
902 split at line boundaries, though---if more than one @acronym{MIME} charset is
903 required to encode a single line, it is not possible to encode the part.
905 When running Emacs with @sc{mule} support, the preferences for which
906 coding system to use is inherited from Emacs itself. This means that
907 if Emacs is set up to prefer UTF-8, it will be used when encoding
908 messages. You can modify this by altering the
909 @code{mm-coding-system-priorities} variable though (@pxref{Encoding
912 The charset to be used can be overridden by setting the @code{charset}
913 @acronym{MML} tag (@pxref{MML Definition}) when composing the message.
915 The encoding of characters (quoted-printable, 8bit etc) is orthogonal
916 to the discussion here, and is controlled by the variables
917 @code{mm-body-charset-encoding-alist} and
918 @code{mm-content-transfer-encoding-defaults} (@pxref{Encoding
925 A (multipart) @acronym{MIME} message can be converted to @acronym{MML}
926 with the @code{mime-to-mml} function. It works on the message in the
927 current buffer, and substitutes @acronym{MML} markup for @acronym{MIME}
928 boundaries. Non-textual parts do not have their contents in the buffer,
929 but instead have the contents in separate buffers that are referred to
930 from the @acronym{MML} tags.
933 An @acronym{MML} message can be converted back to @acronym{MIME} by the
934 @code{mml-to-mime} function.
936 These functions are in certain senses ``lossy''---you will not get back
937 an identical message if you run @code{mime-to-mml} and then
938 @code{mml-to-mime}. Not only will trivial things like the order of the
939 headers differ, but the contents of the headers may also be different.
940 For instance, the original message may use base64 encoding on text,
941 while @code{mml-to-mime} may decide to use quoted-printable encoding, and
944 In essence, however, these two functions should be the inverse of each
945 other. The resulting contents of the message should remain equivalent,
951 @cindex format=flowed
953 The Emacs @acronym{MIME} library will respect the @code{use-hard-newlines}
954 variable (@pxref{Hard and Soft Newlines, ,Hard and Soft Newlines,
955 emacs, Emacs Manual}) when encoding a message, and the
956 ``format=flowed'' Content-Type parameter when decoding a message.
958 On encoding text, regardless of @code{use-hard-newlines}, lines
959 terminated by soft newline characters are filled together and wrapped
960 after the column decided by @code{fill-flowed-encode-column}.
961 Quotation marks (matching @samp{^>* ?}) are respected. The variable
962 controls how the text will look in a client that does not support
963 flowed text, the default is to wrap after 66 characters. If hard
964 newline characters are not present in the buffer, no flow encoding
967 On decoding flowed text, lines with soft newline characters are filled
968 together and wrapped after the column decided by
969 @code{fill-flowed-display-column}. The default is to wrap after
974 @vindex mm-fill-flowed
975 If non-@code{nil} a format=flowed article will be displayed flowed.
979 @node Interface Functions
980 @chapter Interface Functions
981 @cindex interface functions
984 The @code{mail-parse} library is an abstraction over the actual
985 low-level libraries that are described in the next chapter.
987 Standards change, and so programs have to change to fit in the new
988 mold. For instance, RFC2045 describes a syntax for the
989 @code{Content-Type} header that only allows @acronym{ASCII} characters in the
990 parameter list. RFC2231 expands on RFC2045 syntax to provide a scheme
991 for continuation headers and non-@acronym{ASCII} characters.
993 The traditional way to deal with this is just to update the library
994 functions to parse the new syntax. However, this is sometimes the wrong
995 thing to do. In some instances it may be vital to be able to understand
996 both the old syntax as well as the new syntax, and if there is only one
997 library, one must choose between the old version of the library and the
998 new version of the library.
1000 The Emacs @acronym{MIME} library takes a different tack. It defines a
1001 series of low-level libraries (@file{rfc2047.el}, @file{rfc2231.el}
1002 and so on) that parses strictly according to the corresponding
1003 standard. However, normal programs would not use the functions
1004 provided by these libraries directly, but instead use the functions
1005 provided by the @code{mail-parse} library. The functions in this
1006 library are just aliases to the corresponding functions in the latest
1007 low-level libraries. Using this scheme, programs get a consistent
1008 interface they can use, and library developers are free to create
1009 write code that handles new standards.
1011 The following functions are defined by this library:
1014 @item mail-header-parse-content-type
1015 @findex mail-header-parse-content-type
1016 Parse a @code{Content-Type} header and return a list on the following
1021 (attribute1 . value1)
1022 (attribute2 . value2)
1029 (mail-header-parse-content-type
1030 "image/gif; name=\"b980912.gif\"")
1031 @result{} ("image/gif" (name . "b980912.gif"))
1034 @item mail-header-parse-content-disposition
1035 @findex mail-header-parse-content-disposition
1036 Parse a @code{Content-Disposition} header and return a list on the same
1037 format as the function above.
1039 @item mail-content-type-get
1040 @findex mail-content-type-get
1041 Takes two parameters---a list on the format above, and an attribute.
1042 Returns the value of the attribute.
1045 (mail-content-type-get
1046 '("image/gif" (name . "b980912.gif")) 'name)
1047 @result{} "b980912.gif"
1050 @item mail-header-encode-parameter
1051 @findex mail-header-encode-parameter
1052 Takes a parameter string and returns an encoded version of the string.
1053 This is used for parameters in headers like @code{Content-Type} and
1054 @code{Content-Disposition}.
1056 @item mail-header-remove-comments
1057 @findex mail-header-remove-comments
1058 Return a comment-free version of a header.
1061 (mail-header-remove-comments
1062 "Gnus/5.070027 (Pterodactyl Gnus v0.27) (Finnish Landrace)")
1063 @result{} "Gnus/5.070027 "
1066 @item mail-header-remove-whitespace
1067 @findex mail-header-remove-whitespace
1068 Remove linear white space from a header. Space inside quoted strings
1069 and comments is preserved.
1072 (mail-header-remove-whitespace
1073 "image/gif; name=\"Name with spaces\"")
1074 @result{} "image/gif;name=\"Name with spaces\""
1077 @item mail-header-get-comment
1078 @findex mail-header-get-comment
1079 Return the last comment in a header.
1082 (mail-header-get-comment
1083 "Gnus/5.070027 (Pterodactyl Gnus v0.27) (Finnish Landrace)")
1084 @result{} "Finnish Landrace"
1087 @item mail-header-parse-address
1088 @findex mail-header-parse-address
1089 Parse an address and return a list containing the mailbox and the
1093 (mail-header-parse-address
1094 "Hrvoje Niksic <hniksic@@srce.hr>")
1095 @result{} ("hniksic@@srce.hr" . "Hrvoje Niksic")
1098 @item mail-header-parse-addresses
1099 @findex mail-header-parse-addresses
1100 Parse a string with list of addresses and return a list of elements like
1101 the one described above.
1104 (mail-header-parse-addresses
1105 "Hrvoje Niksic <hniksic@@srce.hr>, Steinar Bang <sb@@metis.no>")
1106 @result{} (("hniksic@@srce.hr" . "Hrvoje Niksic")
1107 ("sb@@metis.no" . "Steinar Bang"))
1110 @item mail-header-parse-date
1111 @findex mail-header-parse-date
1112 Parse a date string and return an Emacs time structure.
1114 @item mail-narrow-to-head
1115 @findex mail-narrow-to-head
1116 Narrow the buffer to the header section of the buffer. Point is placed
1117 at the beginning of the narrowed buffer.
1119 @item mail-header-narrow-to-field
1120 @findex mail-header-narrow-to-field
1121 Narrow the buffer to the header under point. Understands continuation
1124 @item mail-header-fold-field
1125 @findex mail-header-fold-field
1126 Fold the header under point.
1128 @item mail-header-unfold-field
1129 @findex mail-header-unfold-field
1130 Unfold the header under point.
1132 @item mail-header-field-value
1133 @findex mail-header-field-value
1134 Return the value of the field under point.
1136 @item mail-encode-encoded-word-region
1137 @findex mail-encode-encoded-word-region
1138 Encode the non-@acronym{ASCII} words in the region. For instance,
1139 @samp{Na@"{@dotless{i}}ve} is encoded as @samp{=?iso-8859-1?q?Na=EFve?=}.
1141 @item mail-encode-encoded-word-buffer
1142 @findex mail-encode-encoded-word-buffer
1143 Encode the non-@acronym{ASCII} words in the current buffer. This function is
1144 meant to be called narrowed to the headers of a message.
1146 @item mail-encode-encoded-word-string
1147 @findex mail-encode-encoded-word-string
1148 Encode the words that need encoding in a string, and return the result.
1151 (mail-encode-encoded-word-string
1152 "This is na@"{@dotless{i}}ve, baby")
1153 @result{} "This is =?iso-8859-1?q?na=EFve,?= baby"
1156 @item mail-decode-encoded-word-region
1157 @findex mail-decode-encoded-word-region
1158 Decode the encoded words in the region.
1160 @item mail-decode-encoded-word-string
1161 @findex mail-decode-encoded-word-string
1162 Decode the encoded words in the string and return the result.
1165 (mail-decode-encoded-word-string
1166 "This is =?iso-8859-1?q?na=EFve,?= baby")
1167 @result{} "This is na@"{@dotless{i}}ve, baby"
1172 Currently, @code{mail-parse} is an abstraction over @code{ietf-drums},
1173 @code{rfc2047}, @code{rfc2045} and @code{rfc2231}. These are documented
1174 in the subsequent sections.
1178 @node Basic Functions
1179 @chapter Basic Functions
1181 This chapter describes the basic, ground-level functions for parsing and
1182 handling. Covered here is parsing @code{From} lines, removing comments
1183 from header lines, decoding encoded words, parsing date headers and so
1184 on. High-level functionality is dealt with in the next chapter
1185 (@pxref{Decoding and Viewing}).
1188 * rfc2045:: Encoding @code{Content-Type} headers.
1189 * rfc2231:: Parsing @code{Content-Type} headers.
1190 * ietf-drums:: Handling mail headers defined by RFC822bis.
1191 * rfc2047:: En/decoding encoded words in headers.
1192 * time-date:: Functions for parsing dates and manipulating time.
1193 * qp:: Quoted-Printable en/decoding.
1194 * base64:: Base64 en/decoding.
1195 * binhex:: Binhex decoding.
1196 * uudecode:: Uuencode decoding.
1197 * yenc:: Yenc decoding.
1198 * rfc1843:: Decoding HZ-encoded text.
1199 * mailcap:: How parts are displayed is specified by the @file{.mailcap} file
1206 RFC2045 is the ``main'' @acronym{MIME} document, and as such, one would
1207 imagine that there would be a lot to implement. But there isn't, since
1208 most of the implementation details are delegated to the subsequent
1211 So @file{rfc2045.el} has only a single function:
1214 @item rfc2045-encode-string
1215 @findex rfc2045-encode-string
1216 Takes a parameter and a value and returns a @samp{PARAM=VALUE} string.
1217 @var{value} will be quoted if there are non-safe characters in it.
1224 RFC2231 defines a syntax for the @code{Content-Type} and
1225 @code{Content-Disposition} headers. Its snappy name is @dfn{MIME
1226 Parameter Value and Encoded Word Extensions: Character Sets, Languages,
1229 In short, these headers look something like this:
1232 Content-Type: application/x-stuff;
1233 title*0*=us-ascii'en'This%20is%20even%20more%20;
1234 title*1*=%2A%2A%2Afun%2A%2A%2A%20;
1238 They usually aren't this bad, though.
1240 The following functions are defined by this library:
1243 @item rfc2231-parse-string
1244 @findex rfc2231-parse-string
1245 Parse a @code{Content-Type} header and return a list describing its
1249 (rfc2231-parse-string
1250 "application/x-stuff;
1251 title*0*=us-ascii'en'This%20is%20even%20more%20;
1252 title*1*=%2A%2A%2Afun%2A%2A%2A%20;
1253 title*2=\"isn't it!\"")
1254 @result{} ("application/x-stuff"
1255 (title . "This is even more ***fun*** isn't it!"))
1258 @item rfc2231-get-value
1259 @findex rfc2231-get-value
1260 Takes one of the lists on the format above and returns
1261 the value of the specified attribute.
1263 @item rfc2231-encode-string
1264 @findex rfc2231-encode-string
1265 Encode a parameter in headers likes @code{Content-Type} and
1266 @code{Content-Disposition}.
1274 @dfn{drums} is an IETF working group that is working on the replacement
1277 The functions provided by this library include:
1280 @item ietf-drums-remove-comments
1281 @findex ietf-drums-remove-comments
1282 Remove the comments from the argument and return the results.
1284 @item ietf-drums-remove-whitespace
1285 @findex ietf-drums-remove-whitespace
1286 Remove linear white space from the string and return the results.
1287 Spaces inside quoted strings and comments are left untouched.
1289 @item ietf-drums-get-comment
1290 @findex ietf-drums-get-comment
1291 Return the last most comment from the string.
1293 @item ietf-drums-parse-address
1294 @findex ietf-drums-parse-address
1295 Parse an address string and return a list that contains the mailbox and
1296 the plain text name.
1298 @item ietf-drums-parse-addresses
1299 @findex ietf-drums-parse-addresses
1300 Parse a string that contains any number of comma-separated addresses and
1301 return a list that contains mailbox/plain text pairs.
1303 @item ietf-drums-parse-date
1304 @findex ietf-drums-parse-date
1305 Parse a date string and return an Emacs time structure.
1307 @item ietf-drums-narrow-to-header
1308 @findex ietf-drums-narrow-to-header
1309 Narrow the buffer to the header section of the current buffer.
1317 RFC2047 (Message Header Extensions for Non-@acronym{ASCII} Text) specifies how
1318 non-@acronym{ASCII} text in headers are to be encoded. This is actually rather
1319 complicated, so a number of variables are necessary to tweak what this
1322 The following variables are tweakable:
1325 @item rfc2047-header-encoding-alist
1326 @vindex rfc2047-header-encoding-alist
1327 This is an alist of header / encoding-type pairs. Its main purpose is
1328 to prevent encoding of certain headers.
1330 The keys can either be header regexps, or @code{t}.
1332 The values can be @code{nil}, in which case the header(s) in question
1333 won't be encoded, @code{mime}, which means that they will be encoded, or
1334 @code{address-mime}, which means the header(s) will be encoded carefully
1335 assuming they contain addresses.
1337 @item rfc2047-charset-encoding-alist
1338 @vindex rfc2047-charset-encoding-alist
1339 RFC2047 specifies two forms of encoding---@code{Q} (a
1340 Quoted-Printable-like encoding) and @code{B} (base64). This alist
1341 specifies which charset should use which encoding.
1343 @item rfc2047-encode-function-alist
1344 @vindex rfc2047-encode-function-alist
1345 This is an alist of encoding / function pairs. The encodings are
1346 @code{Q}, @code{B} and @code{nil}.
1348 @item rfc2047-encoded-word-regexp
1349 @vindex rfc2047-encoded-word-regexp
1350 When decoding words, this library looks for matches to this regexp.
1352 @item rfc2047-encode-encoded-words
1353 @vindex rfc2047-encode-encoded-words
1354 The boolean variable specifies whether encoded words
1355 (e.g. @samp{=?hello?=}) should be encoded again.
1359 Those were the variables, and these are this functions:
1362 @item rfc2047-narrow-to-field
1363 @findex rfc2047-narrow-to-field
1364 Narrow the buffer to the header on the current line.
1366 @item rfc2047-encode-message-header
1367 @findex rfc2047-encode-message-header
1368 Should be called narrowed to the header of a message. Encodes according
1369 to @code{rfc2047-header-encoding-alist}.
1371 @item rfc2047-encode-region
1372 @findex rfc2047-encode-region
1373 Encodes all encodable words in the region specified.
1375 @item rfc2047-encode-string
1376 @findex rfc2047-encode-string
1377 Encode a string and return the results.
1379 @item rfc2047-decode-region
1380 @findex rfc2047-decode-region
1381 Decode the encoded words in the region.
1383 @item rfc2047-decode-string
1384 @findex rfc2047-decode-string
1385 Decode a string and return the results.
1387 @item rfc2047-encode-parameter
1388 @findex rfc2047-encode-parameter
1389 Encode a parameter in the RFC2047-like style. This is a replacement for
1390 the @code{rfc2231-encode-string} function. @xref{rfc2231}.
1392 When attaching files as @acronym{MIME} parts, we should use the RFC2231
1393 encoding to specify the file names containing non-@acronym{ASCII}
1394 characters. However, many mail softwares don't support it in practice
1395 and recipients won't be able to extract files with correct names.
1396 Instead, the RFC2047-like encoding is acceptable generally. This
1397 function provides the very RFC2047-like encoding, resigning to such a
1398 regrettable trend. To use it, put the following line in your
1399 @file{~/.gnus.el} file:
1402 (defalias 'mail-header-encode-parameter 'rfc2047-encode-parameter)
1411 While not really a part of the @acronym{MIME} library, it is convenient to
1412 document this library here. It deals with parsing @code{Date} headers
1413 and manipulating time. (Not by using tesseracts, though, I'm sorry to
1416 These functions convert between five formats: A date string, an Emacs
1417 time structure, a decoded time list, a second number, and a day number.
1419 Here's a bunch of time/date/second/day examples:
1422 (parse-time-string "Sat Sep 12 12:21:54 1998 +0200")
1423 @result{} (54 21 12 12 9 1998 6 nil 7200)
1425 (date-to-time "Sat Sep 12 12:21:54 1998 +0200")
1426 @result{} (13818 19266)
1428 (time-to-seconds '(13818 19266))
1429 @result{} 905595714.0
1431 (seconds-to-time 905595714.0)
1432 @result{} (13818 19266 0)
1434 (time-to-days '(13818 19266))
1437 (days-to-time 729644)
1438 @result{} (961933 65536)
1440 (time-since '(13818 19266))
1443 (time-less-p '(13818 19266) '(13818 19145))
1446 (subtract-time '(13818 19266) '(13818 19145))
1449 (days-between "Sat Sep 12 12:21:54 1998 +0200"
1450 "Sat Sep 07 12:21:54 1998 +0200")
1453 (date-leap-year-p 2000)
1456 (time-to-day-in-year '(13818 19266))
1459 (time-to-number-of-days
1461 (date-to-time "Mon, 01 Jan 2001 02:22:26 GMT")))
1462 @result{} 4.146122685185185
1465 And finally, we have @code{safe-date-to-time}, which does the same as
1466 @code{date-to-time}, but returns a zero time if the date is
1467 syntactically malformed.
1469 The five data representations used are the following:
1473 An RFC822 (or similar) date string. For instance: @code{"Sat Sep 12
1474 12:21:54 1998 +0200"}.
1477 An internal Emacs time. For instance: @code{(13818 26466)}.
1480 A floating point representation of the internal Emacs time. For
1481 instance: @code{905595714.0}.
1484 An integer number representing the number of days since 00000101. For
1485 instance: @code{729644}.
1488 A list of decoded time. For instance: @code{(54 21 12 12 9 1998 6 t
1492 All the examples above represent the same moment.
1494 These are the functions available:
1498 Take a date and return a time.
1500 @item time-to-seconds
1501 Take a time and return seconds.
1503 @item seconds-to-time
1504 Take seconds and return a time.
1507 Take a time and return days.
1510 Take days and return a time.
1513 Take a date and return days.
1515 @item time-to-number-of-days
1516 Take a time and return the number of days that represents.
1518 @item safe-date-to-time
1519 Take a date and return a time. If the date is not syntactically valid,
1520 return a ``zero'' date.
1523 Take two times and say whether the first time is less (i. e., earlier)
1524 than the second time.
1527 Take a time and return a time saying how long it was since that time.
1530 Take two times and subtract the second from the first. I. e., return
1531 the time between the two times.
1534 Take two days and return the number of days between those two days.
1536 @item date-leap-year-p
1537 Take a year number and say whether it's a leap year.
1539 @item time-to-day-in-year
1540 Take a time and return the day number within the year that the time is
1549 This library deals with decoding and encoding Quoted-Printable text.
1551 Very briefly explained, qp encoding means translating all 8-bit
1552 characters (and lots of control characters) into things that look like
1553 @samp{=EF}; that is, an equal sign followed by the byte encoded as a hex
1556 The following functions are defined by the library:
1559 @item quoted-printable-decode-region
1560 @findex quoted-printable-decode-region
1561 QP-decode all the encoded text in the specified region.
1563 @item quoted-printable-decode-string
1564 @findex quoted-printable-decode-string
1565 Decode the QP-encoded text in a string and return the results.
1567 @item quoted-printable-encode-region
1568 @findex quoted-printable-encode-region
1569 QP-encode all the encodable characters in the specified region. The third
1570 optional parameter @var{fold} specifies whether to fold long lines.
1571 (Long here means 72.)
1573 @item quoted-printable-encode-string
1574 @findex quoted-printable-encode-string
1575 QP-encode all the encodable characters in a string and return the
1585 Base64 is an encoding that encodes three bytes into four characters,
1586 thereby increasing the size by about 33%. The alphabet used for
1587 encoding is very resistant to mangling during transit.
1589 The following functions are defined by this library:
1592 @item base64-encode-region
1593 @findex base64-encode-region
1594 base64 encode the selected region. Return the length of the encoded
1595 text. Optional third argument @var{no-line-break} means do not break
1596 long lines into shorter lines.
1598 @item base64-encode-string
1599 @findex base64-encode-string
1600 base64 encode a string and return the result.
1602 @item base64-decode-region
1603 @findex base64-decode-region
1604 base64 decode the selected region. Return the length of the decoded
1605 text. If the region can't be decoded, return @code{nil} and don't
1608 @item base64-decode-string
1609 @findex base64-decode-string
1610 base64 decode a string and return the result. If the string can't be
1611 decoded, @code{nil} is returned.
1622 @code{binhex} is an encoding that originated in Macintosh environments.
1623 The following function is supplied to deal with these:
1626 @item binhex-decode-region
1627 @findex binhex-decode-region
1628 Decode the encoded text in the region. If given a third parameter, only
1629 decode the @code{binhex} header and return the filename.
1638 @code{uuencode} is probably still the most popular encoding of binaries
1639 used on Usenet, although @code{base64} rules the mail world.
1641 The following function is supplied by this package:
1644 @item uudecode-decode-region
1645 @findex uudecode-decode-region
1646 Decode the text in the region.
1654 @code{yenc} is used for encoding binaries on Usenet. The following
1655 function is supplied by this package:
1658 @item yenc-decode-region
1659 @findex yenc-decode-region
1660 Decode the encoded text in the region.
1671 RFC1843 deals with mixing Chinese and @acronym{ASCII} characters in messages. In
1672 essence, RFC1843 switches between @acronym{ASCII} and Chinese by doing this:
1675 This sentence is in @acronym{ASCII}.
1676 The next sentence is in GB.~@{<:Ky2;S@{#,NpJ)l6HK!#~@}Bye.
1679 Simple enough, and widely used in China.
1681 The following functions are available to handle this encoding:
1684 @item rfc1843-decode-region
1685 Decode HZ-encoded text in the region.
1687 @item rfc1843-decode-string
1688 Decode a HZ-encoded string and return the result.
1696 The @file{~/.mailcap} file is parsed by most @acronym{MIME}-aware message
1697 handlers and describes how elements are supposed to be displayed.
1698 Here's an example file:
1702 audio/wav; wavplayer %s
1703 application/msword; catdoc %s ; copiousoutput ; nametemplate=%s.doc
1706 This says that all image files should be displayed with @code{gimp},
1707 that WAVE audio files should be played by @code{wavplayer}, and that
1708 MS-WORD files should be inlined by @code{catdoc}.
1710 The @code{mailcap} library parses this file, and provides functions for
1714 @item mailcap-mime-data
1715 @vindex mailcap-mime-data
1716 This variable is an alist of alists containing backup viewing rules.
1720 Interface functions:
1723 @item mailcap-parse-mailcaps
1724 @findex mailcap-parse-mailcaps
1725 Parse the @file{~/.mailcap} file.
1727 @item mailcap-mime-info
1728 Takes a @acronym{MIME} type as its argument and returns the matching viewer.
1738 The Emacs @acronym{MIME} library implements handling of various elements
1739 according to a (somewhat) large number of RFCs, drafts and standards
1740 documents. This chapter lists the relevant ones. They can all be
1741 fetched from @uref{http://quimby.gnus.org/notes/}.
1746 Standard for the Format of ARPA Internet Text Messages.
1749 Standard for Interchange of USENET Messages
1752 Format of Internet Message Bodies
1758 Message Header Extensions for Non-@acronym{ASCII} Text
1761 Registration Procedures
1764 Conformance Criteria and Examples
1767 @acronym{MIME} Parameter Value and Encoded Word Extensions: Character Sets,
1768 Languages, and Continuations
1771 HZ - A Data Format for Exchanging Files of Arbitrarily Mixed Chinese and
1772 @acronym{ASCII} characters
1774 @item draft-ietf-drums-msg-fmt-05.txt
1775 Draft for the successor of RFC822
1778 The @acronym{MIME} Multipart/Related Content-type
1781 The Multipart/Report Content Type for the Reporting of Mail System
1782 Administrative Messages
1785 Communicating Presentation Information in Internet Messages: The
1786 Content-Disposition Header Field
1789 Documentation of the text/plain format parameter for flowed text.
1803 @c coding: iso-2022-7bit
1806 @c use-kuten-for-period: t
1807 @c use-touten-for-comma: t