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1# Copyright 1999-2008 Gentoo Foundation 1# Copyright 1999-2010 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.52 2008/11/24 14:21:04 ulm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/elisp-common.eclass,v 1.67 2010/09/17 07:41:05 ulm Exp $
4# 4#
5# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org> 5# Copyright 2002-2004 Matthew Kennedy <mkennedy@gentoo.org>
6# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com> 6# Copyright 2003 Jeremy Maitin-Shepard <jbms@attbi.com>
7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org> 7# Copyright 2004-2005 Mamoru Komachi <usata@gentoo.org>
8# Copyright 2007-2008 Christian Faulhammer <opfer@gentoo.org> 8# Copyright 2007-2008 Christian Faulhammer <fauli@gentoo.org>
9# Copyright 2007-2008 Ulrich Müller <ulm@gentoo.org> 9# Copyright 2007-2010 Ulrich Müller <ulm@gentoo.org>
10# 10#
11# @ECLASS: elisp-common.eclass 11# @ECLASS: elisp-common.eclass
12# @MAINTAINER: 12# @MAINTAINER:
13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you have 13# Feel free to contact the Emacs team through <emacs@gentoo.org> if you
14# problems, suggestions or questions. 14# have problems, suggestions or questions.
15# @BLURB: Emacs-related installation utilities 15# @BLURB: Emacs-related installation utilities
16# @DESCRIPTION: 16# @DESCRIPTION:
17# 17#
18# Usually you want to use this eclass for (optional) GNU Emacs support of 18# Usually you want to use this eclass for (optional) GNU Emacs support
19# your package. This is NOT for XEmacs! 19# of your package. This is NOT for XEmacs!
20# 20#
21# Many of the steps here are sometimes done by the build system of your 21# Many of the steps here are sometimes done by the build system of your
22# package (especially compilation), so this is mainly for standalone elisp 22# package (especially compilation), so this is mainly for standalone
23# files you gathered from somewhere else. 23# elisp files you gathered from somewhere else.
24# 24#
25# When relying on the emacs USE flag, you need to add 25# When relying on the emacs USE flag, you need to add
26# 26#
27# emacs? ( virtual/emacs ) 27# emacs? ( virtual/emacs )
28# 28#
29# to your DEPEND/RDEPEND line and use the functions provided here to bring 29# to your DEPEND/RDEPEND line and use the functions provided here to
30# the files to the correct locations. 30# bring the files to the correct locations.
31# 31#
32# .SS 32# .SS
33# src_compile() usage: 33# src_compile() usage:
34# 34#
35# An elisp file is compiled by the elisp-compile() function defined here and 35# An elisp file is compiled by the elisp-compile() function defined
36# simply takes the source files as arguments. The case of interdependent 36# here and simply takes the source files as arguments. The case of
37# elisp files is also supported, since the current directory is added to the 37# interdependent elisp files is also supported, since the current
38# load-path which makes sure that all files are loadable. 38# directory is added to the load-path which makes sure that all files
39# are loadable.
39# 40#
40# elisp-compile *.el || die 41# elisp-compile *.el || die
41# 42#
42# Formerly, function elisp-comp() was used for compilation of interdependent
43# elisp files. This usage is considered as obsolete.
44#
45# Function elisp-make-autoload-file() can be used to generate a file with 43# Function elisp-make-autoload-file() can be used to generate a file
46# autoload definitions for the lisp functions. It takes the output file name 44# with autoload definitions for the lisp functions. It takes the output
47# (default: "${PN}-autoloads.el") and a list of directories (default: working 45# file name (default: "${PN}-autoloads.el") and a list of directories
48# directory) as its arguments. Use of this function requires that the elisp 46# (default: working directory) as its arguments. Use of this function
49# source files contain magic ";;;###autoload" comments. See the Emacs Lisp 47# requires that the elisp source files contain magic ";;;###autoload"
50# Reference Manual (node "Autoload") for a detailed explanation. 48# comments. See the Emacs Lisp Reference Manual (node "Autoload") for
49# a detailed explanation.
51# 50#
52# .SS 51# .SS
53# src_install() usage: 52# src_install() usage:
54# 53#
55# The resulting compiled files (.elc) should be put in a subdirectory of 54# The resulting compiled files (.elc) should be put in a subdirectory of
56# /usr/share/emacs/site-lisp/ which is named after the first argument 55# /usr/share/emacs/site-lisp/ which is named after the first argument
57# of elisp-install(). The following parameters are the files to be put in 56# of elisp-install(). The following parameters are the files to be put
58# that directory. Usually the subdirectory should be ${PN}, you can choose 57# in that directory. Usually the subdirectory should be ${PN}, you can
59# something else, but remember to tell elisp-site-file-install() (see below) 58# choose something else, but remember to tell elisp-site-file-install()
60# the change, as it defaults to ${PN}. 59# (see below) the change, as it defaults to ${PN}.
61# 60#
62# elisp-install ${PN} *.el *.elc || die 61# elisp-install ${PN} *.el *.elc || die
63# 62#
64# To let the Emacs support be activated by Emacs on startup, you need 63# To let the Emacs support be activated by Emacs on startup, you need
65# to provide a site file (shipped in ${FILESDIR}) which contains the startup 64# to provide a site file (shipped in ${FILESDIR}) which contains the
66# code (have a look in the documentation of your software). Normally this 65# startup code (have a look in the documentation of your software).
67# would look like this: 66# Normally this would look like this:
68#
69# ;;; csv-mode site-lisp configuration
70# 67#
71# (add-to-list 'load-path "@SITELISP@") 68# (add-to-list 'load-path "@SITELISP@")
72# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode)) 69# (add-to-list 'auto-mode-alist '("\\.csv\\'" . csv-mode))
73# (autoload 'csv-mode "csv-mode" "Major mode for csv files." t) 70# (autoload 'csv-mode "csv-mode" "Major mode for csv files." t)
74# 71#
75# If your Emacs support files are installed in a subdirectory of 72# If your Emacs support files are installed in a subdirectory of
76# /usr/share/emacs/site-lisp/ (which is recommended), you need to extend 73# /usr/share/emacs/site-lisp/ (which is strongly recommended), you need
77# Emacs' load-path as shown in the first non-comment. 74# to extend Emacs' load-path as shown in the first non-comment line.
78# The elisp-site-file-install() function of this eclass will replace 75# The elisp-site-file-install() function of this eclass will replace
79# "@SITELISP@" by the actual path. 76# "@SITELISP@" and "@SITEETC@" by the actual paths.
80# 77#
81# The next line tells Emacs to load the mode opening a file ending with 78# The next line tells Emacs to load the mode opening a file ending
82# ".csv" and load functions depending on the context and needed features. 79# with ".csv" and load functions depending on the context and needed
83# Be careful though. Commands as "load-library" or "require" bloat the 80# features. Be careful though. Commands as "load-library" or "require"
84# editor as they are loaded on every startup. When having a lot of Emacs 81# bloat the editor as they are loaded on every startup. When having
85# support files, users may be annoyed by the start-up time. Also avoid 82# many Emacs support files, users may be annoyed by the start-up time.
86# keybindings as they might interfere with the user's settings. Give a hint 83# Also avoid keybindings as they might interfere with the user's
87# in pkg_postinst(), which should be enough. 84# settings. Give a hint in pkg_postinst(), which should be enough.
88# 85#
89# The naming scheme for this site-init file matches the shell pattern 86# The naming scheme for this site-init file matches the shell pattern
90# "[1-8][0-9]*-gentoo.el", where the two digits at the beginning define the 87# "[1-8][0-9]*-gentoo*.el", where the two digits at the beginning define
91# loading order (numbers below 10 or above 89 are reserved for internal use). 88# the loading order (numbers below 10 or above 89 are reserved for
92# So if you depend on another Emacs package, your site file's number must be 89# internal use). So if your initialisation depends on another Emacs
93# higher! 90# package, your site file's number must be higher!
94# 91#
95# Best practice is to define a SITEFILE variable in the global scope of your 92# Best practice is to define a SITEFILE variable in the global scope of
96# ebuild (e.g., right after DEPEND): 93# your ebuild (e.g., right after S or RDEPEND):
97# 94#
98# SITEFILE=50${PN}-gentoo.el 95# SITEFILE="50${PN}-gentoo.el"
99# 96#
100# Which is then installed by 97# Which is then installed by
101# 98#
102# elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die 99# elisp-site-file-install "${FILESDIR}/${SITEFILE}" || die
103# 100#
101# in src_install(). Any characters after the "-gentoo" part and before
102# the extension will be stripped from the destination file's name.
103# For example, a file "50${PN}-gentoo-${PV}.el" will be installed as
104# in src_install(). If your subdirectory is not named ${PN}, give the 104# "50${PN}-gentoo.el". If your subdirectory is not named ${PN}, give
105# differing name as second argument. 105# the differing name as second argument.
106# 106#
107# .SS 107# .SS
108# pkg_postinst() / pkg_postrm() usage: 108# pkg_postinst() / pkg_postrm() usage:
109# 109#
110# After that you need to recreate the start-up file of Emacs after emerging 110# After that you need to recreate the start-up file of Emacs after
111# and unmerging by using 111# emerging and unmerging by using
112# 112#
113# pkg_postinst() { 113# pkg_postinst() {
114# elisp-site-regen 114# elisp-site-regen
115# } 115# }
116# 116#
117# pkg_postrm() { 117# pkg_postrm() {
118# elisp-site-regen 118# elisp-site-regen
119# } 119# }
120# 120#
121# When having optional Emacs support, you should prepend "use emacs &&" to 121# When having optional Emacs support, you should prepend "use emacs &&"
122# above calls of elisp-site-regen(). Don't use "has_version virtual/emacs"! 122# to above calls of elisp-site-regen().
123# When unmerging the state of the emacs USE flag is taken from the package 123# Don't use "has_version virtual/emacs"! When unmerging the state of
124# database and not from the environment, so it is no problem when you unset 124# the emacs USE flag is taken from the package database and not from the
125# environment, so it is no problem when you unset USE=emacs between
125# USE=emacs between merge and unmerge of a package. 126# merge and unmerge of a package.
126# 127#
127# .SS 128# .SS
128# Miscellaneous functions: 129# Miscellaneous functions:
129# 130#
130# elisp-emacs-version() outputs the version of the currently active Emacs. 131# elisp-emacs-version() outputs the version of the currently active Emacs.
140SITEETC=/usr/share/emacs/etc 141SITEETC=/usr/share/emacs/etc
141 142
142# @ECLASS-VARIABLE: EMACS 143# @ECLASS-VARIABLE: EMACS
143# @DESCRIPTION: 144# @DESCRIPTION:
144# Path of Emacs executable. 145# Path of Emacs executable.
145EMACS=/usr/bin/emacs 146EMACS=${EPREFIX}/usr/bin/emacs
146 147
147# @ECLASS-VARIABLE: EMACSFLAGS 148# @ECLASS-VARIABLE: EMACSFLAGS
148# @DESCRIPTION: 149# @DESCRIPTION:
149# Flags for executing Emacs in batch mode. 150# Flags for executing Emacs in batch mode.
150# These work for Emacs versions 18-23, so don't change them. 151# These work for Emacs versions 18-23, so don't change them.
158# @FUNCTION: elisp-compile 159# @FUNCTION: elisp-compile
159# @USAGE: <list of elisp files> 160# @USAGE: <list of elisp files>
160# @DESCRIPTION: 161# @DESCRIPTION:
161# Byte-compile Emacs Lisp files. 162# Byte-compile Emacs Lisp files.
162# 163#
163# This function uses GNU Emacs to byte-compile all ".el" specified by its 164# This function uses GNU Emacs to byte-compile all ".el" specified by
164# arguments. The resulting byte-code (".elc") files are placed in the same 165# its arguments. The resulting byte-code (".elc") files are placed in
165# directory as their corresponding source file. 166# the same directory as their corresponding source file.
166# 167#
167# The current directory is added to the load-path. This will ensure that 168# The current directory is added to the load-path. This will ensure
168# interdependent Emacs Lisp files are visible between themselves, in case 169# that interdependent Emacs Lisp files are visible between themselves,
169# they require or load one another. 170# in case they require or load one another.
170 171
171elisp-compile() { 172elisp-compile() {
172 ebegin "Compiling GNU Emacs Elisp files" 173 ebegin "Compiling GNU Emacs Elisp files"
173 ${EMACS} ${EMACSFLAGS} ${BYTECOMPFLAGS} -f batch-byte-compile "$@" 174 ${EMACS} ${EMACSFLAGS} ${BYTECOMPFLAGS} -f batch-byte-compile "$@"
174 eend $? "elisp-compile: batch-byte-compile failed" 175 eend $? "elisp-compile: batch-byte-compile failed"
175} 176}
176 177
177# #FUNCTION: elisp-comp
178# #USAGE: <list of elisp files>
179# #DESCRIPTION:
180# Byte-compile interdependent Emacs Lisp files.
181# THIS FUNCTION IS DEPRECATED.
182#
183# This function byte-compiles all ".el" files which are part of its
184# arguments, using GNU Emacs, and puts the resulting ".elc" files into the
185# current directory, so disregarding the original directories used in ".el"
186# arguments.
187#
188# This function manages in such a way that all Emacs Lisp files to be
189# compiled are made visible between themselves, in the event they require or
190# load one another.
191
192elisp-comp() { 178elisp-comp() {
193 # Copyright 1995 Free Software Foundation, Inc. 179 die "Function elisp-comp is not supported any more, see bug 235442"
194 # François Pinard <pinard@iro.umontreal.ca>, 1995.
195 # Originally taken from GNU autotools.
196
197 ewarn "Function elisp-comp is deprecated and may be removed in future."
198 ewarn "Please use function elisp-compile instead, or report a bug about"
199 ewarn "${CATEGORY}/${PF} at <http://bugs.gentoo.org/>."
200 echo
201
202 [ $# -gt 0 ] || return 1
203
204 ebegin "Compiling GNU Emacs Elisp files"
205
206 local tempdir=elc.$$
207 mkdir ${tempdir}
208 cp "$@" ${tempdir}
209 pushd ${tempdir}
210
211 echo "(add-to-list 'load-path \"../\")" > script
212 ${EMACS} ${EMACSFLAGS} -l script -f batch-byte-compile *.el
213 local ret=$?
214 mv *.elc ..
215
216 popd
217 rm -fr ${tempdir}
218
219 eend ${ret} "elisp-comp: batch-byte-compile failed"
220} 180}
221 181
222# @FUNCTION: elisp-emacs-version 182# @FUNCTION: elisp-emacs-version
223# @DESCRIPTION: 183# @DESCRIPTION:
224# Output version of currently active Emacs. 184# Output version of currently active Emacs.
234# @USAGE: [output file] [list of directories] 194# @USAGE: [output file] [list of directories]
235# @DESCRIPTION: 195# @DESCRIPTION:
236# Generate a file with autoload definitions for the lisp functions. 196# Generate a file with autoload definitions for the lisp functions.
237 197
238elisp-make-autoload-file() { 198elisp-make-autoload-file() {
239 local f="${1:-${PN}-autoloads.el}" 199 local f="${1:-${PN}-autoloads.el}" null="" page=$'\f'
240 shift 200 shift
241 ebegin "Generating autoload file for GNU Emacs" 201 ebegin "Generating autoload file for GNU Emacs"
242 202
243 sed 's/^FF/\f/' >"${f}" <<-EOF 203 cat >"${f}" <<-EOF
244 ;;; ${f##*/} --- autoloads for ${P} 204 ;;; ${f##*/} --- autoloads for ${PN}
245 205
246 ;;; Commentary: 206 ;;; Commentary:
247 ;; Automatically generated by elisp-common.eclass 207 ;; Automatically generated by elisp-common.eclass
248 ;; DO NOT EDIT THIS FILE 208 ;; DO NOT EDIT THIS FILE
249 209
250 ;;; Code: 210 ;;; Code:
251 FF 211 ${page}
252 ;; Local Variables: 212 ;; Local ${null}Variables:
253 ;; version-control: never 213 ;; version-control: never
254 ;; no-byte-compile: t 214 ;; no-byte-compile: t
255 ;; no-update-autoloads: t 215 ;; no-update-autoloads: t
256 ;; End: 216 ;; End:
217
257 ;;; ${f##*/} ends here 218 ;;; ${f##*/} ends here
258 EOF 219 EOF
259 220
260 ${EMACS} ${EMACSFLAGS} \ 221 ${EMACS} ${EMACSFLAGS} \
261 --eval "(setq make-backup-files nil)" \ 222 --eval "(setq make-backup-files nil)" \
282} 243}
283 244
284# @FUNCTION: elisp-site-file-install 245# @FUNCTION: elisp-site-file-install
285# @USAGE: <site-init file> [subdirectory] 246# @USAGE: <site-init file> [subdirectory]
286# @DESCRIPTION: 247# @DESCRIPTION:
287# Install Emacs site-init file in SITELISP directory. 248# Install Emacs site-init file in SITELISP directory. Automatically
249# inserts a standard comment header with the name of the package (unless
250# it is already present). Tokens @SITELISP@ and @SITEETC@ are replaced
251# by the path to the package's subdirectory in SITELISP and SITEETC,
252# respectively.
288 253
289elisp-site-file-install() { 254elisp-site-file-install() {
290 local sf="${T}/${1##*/}" my_pn="${2:-${PN}}" ret 255 local sf="${1##*/}" my_pn="${2:-${PN}}" ret
256 local header=";;; ${PN} site-lisp configuration"
257
258 [[ ${sf} == [0-9][0-9]*-gentoo*.el ]] \
259 || ewarn "elisp-site-file-install: bad name of site-init file"
260 sf="${T}/${sf/%-gentoo*.el/-gentoo.el}"
291 ebegin "Installing site initialisation file for GNU Emacs" 261 ebegin "Installing site initialisation file for GNU Emacs"
292 cp "$1" "${sf}" 262 [[ $1 = ${sf} ]] || cp "$1" "${sf}"
263 sed -i -e "1{:x;/^\$/{n;bx;};/^;.*${PN}/I!s:^:${header}\n\n:;1s:^:\n:;}" \
293 sed -i -e "s:@SITELISP@:${SITELISP}/${my_pn}:g" \ 264 -e "s:@SITELISP@:${EPREFIX}${SITELISP}/${my_pn}:g" \
294 -e "s:@SITEETC@:${SITEETC}/${my_pn}:g;\$q" "${sf}" 265 -e "s:@SITEETC@:${EPREFIX}${SITEETC}/${my_pn}:g;\$q" "${sf}"
295 ( # subshell to avoid pollution of calling environment 266 ( # subshell to avoid pollution of calling environment
296 insinto "${SITELISP}/site-gentoo.d" 267 insinto "${SITELISP}/site-gentoo.d"
297 doins "${sf}" 268 doins "${sf}"
298 ) 269 )
299 ret=$? 270 ret=$?
301 eend ${ret} "elisp-site-file-install: doins failed" 272 eend ${ret} "elisp-site-file-install: doins failed"
302} 273}
303 274
304# @FUNCTION: elisp-site-regen 275# @FUNCTION: elisp-site-regen
305# @DESCRIPTION: 276# @DESCRIPTION:
306# Regenerate the site-gentoo.el file, based on packages' site initialisation 277# Regenerate the site-gentoo.el file, based on packages' site
307# files in the /usr/share/emacs/site-lisp/site-gentoo.d/ directory. 278# initialisation files in the /usr/share/emacs/site-lisp/site-gentoo.d/
279# directory.
308# 280#
309# Note: Before December 2007, site initialisation files were installed in 281# Note: Before December 2007, site initialisation files were installed
310# /usr/share/emacs/site-lisp/. For backwards compatibility, this location is 282# in /usr/share/emacs/site-lisp/. For backwards compatibility, this
311# still supported when generating site-gentoo.el. 283# location is still supported when generating site-gentoo.el.
312 284
313elisp-site-regen() { 285elisp-site-regen() {
314 local i sf line firstrun obsolete 286 local sitelisp=${ROOT}${EPREFIX}${SITELISP}
287 local sf i line null="" page=$'\f'
315 local -a sflist 288 local -a sflist
316 # Work around Paludis borkage: variable T is empty in pkg_postrm
317 local tmpdir=${T:-$(mktemp -d)}
318 289
319 if [ ! -d "${ROOT}${SITELISP}" ]; then 290 if [ ! -d "${sitelisp}" ]; then
320 eerror "elisp-site-regen: Directory ${SITELISP} does not exist" 291 eerror "elisp-site-regen: Directory ${sitelisp} does not exist"
321 return 1 292 return 1
322 fi 293 fi
323 294
324 [ -e "${ROOT}${SITELISP}"/site-gentoo.el ] || firstrun=t 295 if [ ! -d "${T}" ]; then
325 296 eerror "elisp-site-regen: Temporary directory ${T} does not exist"
326 if [ "${firstrun}" ] && [ ! -e "${ROOT}${SITELISP}"/site-start.el ]; then 297 return 1
327 einfo "Creating default ${SITELISP}/site-start.el ..."
328 cat <<-EOF >"${tmpdir}"/site-start.el
329 ;;; site-start.el
330
331 ;;; Commentary:
332 ;; This default site startup file is installed by elisp-common.eclass.
333 ;; You may replace this file by your own site initialisation, or even
334 ;; remove it completely; it will not be recreated.
335
336 ;;; Code:
337 ;; Load site initialisation for Gentoo-installed packages.
338 (require 'site-gentoo)
339
340 ;;; site-start.el ends here
341 EOF
342 fi 298 fi
343 299
344 einfon "Regenerating ${SITELISP}/site-gentoo.el ..." 300 einfon "Regenerating site-gentoo.el for GNU Emacs (${EBUILD_PHASE}) ..."
345 301
346 # remove any auxiliary file (from previous run) 302 # Until January 2009, elisp-common.eclass sometimes created an
347 rm -f "${ROOT}${SITELISP}"/00site-gentoo.el 303 # auxiliary file for backwards compatibility. Remove any such file.
304 rm -f "${sitelisp}"/00site-gentoo.el
348 305
349 # set nullglob option, there may be a directory without matching files
350 local old_shopts=$(shopt -p nullglob)
351 shopt -s nullglob
352
353 for sf in "${ROOT}${SITELISP}"/[0-9][0-9]*-gentoo.el \ 306 for sf in "${sitelisp}"/[0-9][0-9]*-gentoo.el \
354 "${ROOT}${SITELISP}"/site-gentoo.d/[0-9][0-9]*.el 307 "${sitelisp}"/site-gentoo.d/[0-9][0-9]*.el
355 do 308 do
356 [ -r "${sf}" ] || continue 309 [ -r "${sf}" ] || continue
357 # sort files by their basename. straight insertion sort. 310 # sort files by their basename. straight insertion sort.
358 for ((i=${#sflist[@]}; i>0; i--)); do 311 for ((i=${#sflist[@]}; i>0; i--)); do
359 [[ ${sf##*/} < ${sflist[i-1]##*/} ]] || break 312 [[ ${sf##*/} < ${sflist[i-1]##*/} ]] || break
360 sflist[i]=${sflist[i-1]} 313 sflist[i]=${sflist[i-1]}
361 done 314 done
362 sflist[i]=${sf} 315 sflist[i]=${sf}
363 # set a flag if there are obsolete files
364 [ "${sf%/*}" = "${ROOT}${SITELISP}" ] && obsolete=t
365 done 316 done
366 317
367 eval "${old_shopts}"
368
369 cat <<-EOF >"${tmpdir}"/site-gentoo.el 318 cat <<-EOF >"${T}"/site-gentoo.el
370 ;;; site-gentoo.el --- site initialisation for Gentoo-installed packages 319 ;;; site-gentoo.el --- site initialisation for Gentoo-installed packages
371 320
372 ;;; Commentary: 321 ;;; Commentary:
373 ;; Automatically generated by elisp-common.eclass 322 ;; Automatically generated by elisp-common.eclass
374 ;; DO NOT EDIT THIS FILE 323 ;; DO NOT EDIT THIS FILE
375 324
376 ;;; Code: 325 ;;; Code:
377 EOF 326 EOF
378 # Use sed instead of cat here, since files may miss a trailing newline. 327 # Use sed instead of cat here, since files may miss a trailing newline.
379 sed '$q' "${sflist[@]}" </dev/null >>"${tmpdir}"/site-gentoo.el 328 sed '$q' "${sflist[@]}" </dev/null >>"${T}"/site-gentoo.el
380 cat <<-EOF >>"${tmpdir}"/site-gentoo.el 329 cat <<-EOF >>"${T}"/site-gentoo.el
381 330
382 (provide 'site-gentoo) 331 (provide 'site-gentoo)
383 332
333 ${page}
384 ;; Local Variables: 334 ;; Local ${null}Variables:
385 ;; no-byte-compile: t 335 ;; no-byte-compile: t
336 ;; buffer-read-only: t
386 ;; End: 337 ;; End:
338
387 ;;; site-gentoo.el ends here 339 ;;; site-gentoo.el ends here
388 EOF 340 EOF
389 341
390 if cmp -s "${ROOT}${SITELISP}"/site-gentoo.el "${tmpdir}"/site-gentoo.el 342 if cmp -s "${sitelisp}"/site-gentoo.el "${T}"/site-gentoo.el; then
391 then
392 # This prevents outputting unnecessary text when there 343 # This prevents outputting unnecessary text when there
393 # was actually no change. 344 # was actually no change.
394 # A case is a remerge where we have doubled output. 345 # A case is a remerge where we have doubled output.
346 rm -f "${T}"/site-gentoo.el
395 echo " no changes." 347 echo " no changes."
396 else 348 else
397 mv "${tmpdir}"/site-gentoo.el "${ROOT}${SITELISP}"/site-gentoo.el 349 mv "${T}"/site-gentoo.el "${sitelisp}"/site-gentoo.el
398 [ -f "${tmpdir}"/site-start.el ] \
399 && [ ! -e "${ROOT}${SITELISP}"/site-start.el ] \
400 && mv "${tmpdir}"/site-start.el "${ROOT}${SITELISP}"/site-start.el
401 echo 350 echo
351 case ${#sflist[@]} in
352 0) ewarn "... Huh? No site initialisation files found." ;;
353 1) einfo "... ${#sflist[@]} site initialisation file included." ;;
402 einfo "... ${#sflist[@]} site initialisation file(s) included." 354 *) einfo "... ${#sflist[@]} site initialisation files included." ;;
355 esac
403 fi 356 fi
404 357
405 if [ "${firstrun}" ]; then
406 echo
407 while read line; do einfo "${line:- }"; done <<-EOF
408 All site initialisation for Gentoo-installed packages is added to
409 /usr/share/emacs/site-lisp/site-gentoo.el; site-start.el is not
410 managed by Gentoo. You are responsible for all maintenance of
411 site-start.el if there is such a file.
412
413 In order for this site initialisation to be loaded for all users
414 automatically, you can add a line like this:
415
416 (require 'site-gentoo)
417
418 to /usr/share/emacs/site-lisp/site-start.el. Alternatively, that line
419 can be added by individual users to their initialisation files, or,
420 for greater flexibility, users can load individual package-specific
421 initialisation files from /usr/share/emacs/site-lisp/site-gentoo.d/.
422 EOF
423 echo
424 fi
425
426 if [ "${obsolete}" ]; then
427 echo
428 while read line; do ewarn "${line}"; done <<-EOF
429 Site-initialisation files of Emacs packages are now installed in
430 /usr/share/emacs/site-lisp/site-gentoo.d/. We strongly recommend
431 that you use app-admin/emacs-updater to rebuild the installed
432 Emacs packages.
433 EOF
434
435 # Kludge for backwards compatibility: During pkg_postrm, old versions
436 # of this eclass (saved in the VDB) won't find packages' site-init
437 # files in the new location. So we copy them to an auxiliary file
438 # that is visible to old eclass versions.
439 for sf in "${sflist[@]}"; do
440 [ "${sf%/*}" = "${ROOT}${SITELISP}/site-gentoo.d" ] \
441 && cat "${sf}" >>"${ROOT}${SITELISP}"/00site-gentoo.el
442 done
443 fi
444
445 # cleanup
446 rm -f "${tmpdir}"/site-{gentoo,start}.el
447
448 return 0 358 return 0
449} 359}

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