3 files changed, 413 insertions, 0 deletions
diff --git a/app-shells/Manifest.gz b/app-shells/Manifest.gz
index 409e2bddf047..27f6cb1ee0c9 100644
--- a/app-shells/Manifest.gz
+++ b/app-shells/Manifest.gz
diff --git a/app-shells/bash/Manifest b/app-shells/bash/Manifest
index ff39f9325578..eae7f2a96ee9 100644
--- a/app-shells/bash/Manifest
+++ b/app-shells/bash/Manifest
@@ -49,6 +49,7 @@ DIST bash-5.3_alpha_p20240711-d3e86e66ce857a8dc02e3116fd98b6e5b34d6364.tar.xz 85
 DIST bash-5.3_alpha_p20240718-6c703092759ace29263ea96374e18412c59acc7f.tar.xz 8535120 BLAKE2B 7dd47829ca71689c138af9acd2657cee732f43abc82506ad76e65eb038e39acd31e208e985714460d76fbfb354517c3597fd85d459969541af950382ae7796c9 SHA512 41e07ed4fa90f8b645faf6c26766048fa51a3e3bd420dc875898fc9a1d674c05fe35f12b1c4d6ac6e6374736e6052e17e235a94c205c4bda80183f8065035182
 DIST bash-5.3_alpha_p20240726-d5ef283cbdd08217efdc55974a6a8a2c52a7562f.tar.xz 8534860 BLAKE2B 93ced89c621522554bb3f8c2e23ab2a6d8500beedb023064006cbd5777719195c2dbaabe6a04d737cb33d940c8a40ad2b3cdbce43b18e2b074d0d050dac77559 SHA512 d651cf0da9ed62d2e54ac526ef55a2a8eba274b430b627fc9e146bbc1d936363cf248388439dac485b653f6bfedcb21269c4b5f4662646080ecfe07390572450
 DIST bash-5.3_alpha_p20240730-e45ec6f76bea49cf8df306ac45022306831ed086.tar.xz 8535992 BLAKE2B 3f05f740987d3119f5e3c6bee1521a66c634737f9cf30fb911d1f03351e6c946a5c3de45fbdf817854613e23165ccf329b0c332639b593060dde33b53eae0e3d SHA512 2d1d6302ea60f1bec1d67d9f5f237573219080dea35ea29dd2cc3df4a8f41a2f89845ca3775e7044a1751fdb0b18db2ab4bc05cbd8679b745205868d048fbcc9
+DIST bash-5.3_alpha_p20240810-772e7e760e8a098e4d8dee21cf11090be4757918.tar.xz 8537400 BLAKE2B c12004b20b64e51c82e845d6c80bfb3cc70be19ec2a0e74cc0b25a86ad37bfb16ad9a115f128d895244485f869c1504b084775536e694000126bef2726126807 SHA512 87a97e6cf365d4780d9ec308b3f12f0d271c57eb69e716912004ececc038ff0db79a91ff6d1a04a14dba4785893b3f5dd0ca1e9f461c72c89476525acadbdf8f
 DIST bash205b-001 1132 BLAKE2B 0c5eef29777d54ef05957ea3d63b1556fb380bd20c238dc28993d822b37bc4e78ff4048ad069f6b8cd25da77ccdeb7aecd86c4349cb9d81e5e94c7001eeae5e6 SHA512 5ce4357468821b05e747201f3aa57225ad8f540c9e2c87051720490e039c30b478b9b662a68f14a0800fefe40184e4495e2645665200f9d75e9a115b2ac08071
 DIST bash205b-002 755 BLAKE2B 6a6ed5679d451f02f8104b345c1722d11718ce3b4043b581c17786d40d8da69a34786fb56d0c363dba277b8e9dd33f12f70c9cc73a9fc39ba4a8319406f0458d SHA512 46947b0229478d5c2cfeff68b8ebc00e4ef0c8b94e336ca12f72b4490ba3622c0240c01c17c1641c3b07adc2c64ec94d6d780365e8990768ec8888f3a9526883
 DIST bash205b-003 2356 BLAKE2B b7887d00d92fd298cd07a15e1c73b516dabd22ecd74c97091636dd97a0cd55024ed698e5cc924c4311d994dd326b1ad074bea35e7650cf9cf4e25c60d2713fa7 SHA512 74528ca5d165b812d299f1c69b47757bd677c0b22ce4217e155cd641708b02364a93c6709fb57b546b376b36da74429a61493921c7c199563da40ddcf1c1f399
@@ -485,5 +486,6 @@ EBUILD bash-5.3_alpha_p20240711.ebuild 12157 BLAKE2B c6956c25a2f6f12bc2f8e44fcd1
 EBUILD bash-5.3_alpha_p20240718.ebuild 12157 BLAKE2B 0ca4e04bf456833e5b29243de0a9ef5e1ca9129d7199eac872fb5c0c1ebf7c08a2e9318d1c649490e8d0881a292e083f6965716bb607e5a178333c0e632a31b5 SHA512 0a47646a05e22a9afb7decac5003ac86e121c45ac429ac4558714cbe7e7f546a9ad3283095f349ce148af369a7293d8442b76381a20c53c59e69807e364053c8
 EBUILD bash-5.3_alpha_p20240726.ebuild 12157 BLAKE2B 5cf585f79437532ac4b5c3fa69b5a465229ef6c710013d807837baea4f8f0a1709b6626483820dc811210e38c817957fd7c267a5a4de2ccadd68d583c73ed423 SHA512 258346d9cdf1f7f23d62459f699149f1fae005be81ffd8f02df2a011ef47179f980c69a10d3e5e6f43dd99f6f1b283586e76b1f31cefe9d5d02c24a681a8b98a
 EBUILD bash-5.3_alpha_p20240730.ebuild 12157 BLAKE2B 201660517a3e1002971d30c3a02dfe67e3fa97981d4b68dbc07ea57fdb4bea6234e8ca028cb16c9740c03ccaaf7854ad0b9e7ec26ab1c7695f791a02ea7e9dd9 SHA512 3e6f00dba4352344a9b281fb58d99874cb052cf2fdef0da52fbd6f6a03ea58b8028330cf25e1748de28d67a04a2a81fe7340c0534088950ec029046da8d89438
+EBUILD bash-5.3_alpha_p20240810.ebuild 12157 BLAKE2B 532c088f08f0849a0b3d79939a18057b73b8e4e02e656f75fb2c5172cd88ce4398c0ede7fffbfbaedf751714028b01638e73711e9cbb2e26381086a219b1e7a0 SHA512 1241d904206ae4b852cba0de71074dfbaf43f8fa3c6bfbd6594ef03d17dc6ff34757ede36eb7d21ed0b3785095ef235b6d868282e11dc41f8aaa45b6f40937bd
 EBUILD bash-9999.ebuild 12157 BLAKE2B c6956c25a2f6f12bc2f8e44fcd1f9a33012d7bdebf01e300cbafe098ade1e3125b95398f7fce13d693cc1531679461f102caf61f46e6da48837c4f89b0bdd923 SHA512 198efbc06a32d8a275d83801cb5a142be1259f7420802ff0c0ed0c658b130f9e04dfbb4e277fec3a0b9112574ffa1a6f8203f7f58458a0aab57b8b85664c2e76
 MISC metadata.xml 1009 BLAKE2B f71587b0a6d05b907f82b26be93b071290d91dc8f612f7b008a05eaa94d45be2ef8c1d992b7ac886648a9dcf964c30e8d9a7aff90d44835beb452e0d635b9533 SHA512 8aa1cb4c3206a76d10181394a91c315967fd9d3b359194f430f075fdd5a0b4b32149eec36b85412ef7e84b55e7b01955c75486b2df82b392a5acb3df8229a88d
diff --git a/app-shells/bash/bash-5.3_alpha_p20240810.ebuild b/app-shells/bash/bash-5.3_alpha_p20240810.ebuild
new file mode 100644
index 000000000000..e204911b1f9e
--- /dev/null
+++ b/app-shells/bash/bash-5.3_alpha_p20240810.ebuild
@@ -0,0 +1,411 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/chetramey.asc
+inherit flag-o-matic toolchain-funcs prefix verify-sig
+
+# Uncomment if we have a patchset.
+#GENTOO_PATCH_DEV="sam"
+#GENTOO_PATCH_VER="${PV}"
+
+MY_PV=${PV/_p*}
+MY_PV=${MY_PV/_/-}
+MY_P=${PN}-${MY_PV}
+MY_PATCHES=()
+
+# Determine the patchlevel.
+case ${PV} in
+	9999|*_alpha*|*_beta*|*_rc*)
+		# Set a negative patchlevel to indicate that it's a pre-release.
+		PLEVEL=-1
+		;;
+	*_p*)
+		PLEVEL=${PV##*_p}
+		;;
+	*)
+		PLEVEL=0
+esac
+
+# The version of readline this bash normally ships with. Note that we only use
+# the bundled copy of readline for pre-releases.
+READLINE_VER="8.3_alpha"
+
+DESCRIPTION="The standard GNU Bourne again shell"
+HOMEPAGE="https://tiswww.case.edu/php/chet/bash/bashtop.html https://git.savannah.gnu.org/cgit/bash.git"
+
+if [[ ${PV} == 9999 ]]; then
+	EGIT_REPO_URI="https://git.savannah.gnu.org/git/bash.git"
+	EGIT_BRANCH=devel
+	inherit git-r3
+elif (( PLEVEL < 0 )) && [[ ${PV} == *_p* ]] ; then
+	# It can be useful to have snapshots in the pre-release period once
+	# the first alpha is out, as various bugs get reported and fixed from
+	# the alpha, and the next pre-release is usually quite far away.
+	#
+	# i.e. if it's worth packaging the alpha, it's worth packaging a followup.
+	BASH_COMMIT="772e7e760e8a098e4d8dee21cf11090be4757918"
+	SRC_URI="https://git.savannah.gnu.org/cgit/bash.git/snapshot/bash-${BASH_COMMIT}.tar.xz -> ${P}-${BASH_COMMIT}.tar.xz"
+	S=${WORKDIR}/${PN}-${BASH_COMMIT}
+else
+	my_urls=( {'mirror://gnu/bash','ftp://ftp.cwru.edu/pub/bash'}/"${MY_P}.tar.gz" )
+
+	# bash-5.1 -> bash51
+	my_p=${PN}$(ver_cut 1-2) my_p=${my_p/.}
+
+	for (( my_patch_idx = 1; my_patch_idx <= PLEVEL; my_patch_idx++ )); do
+		printf -v my_patch_ver %s-%03d "${my_p}" "${my_patch_idx}"
+		my_urls+=( {'mirror://gnu/bash','ftp://ftp.cwru.edu/pub/bash'}/"${MY_P}-patches/${my_patch_ver}" )
+		MY_PATCHES+=( "${DISTDIR}/${my_patch_ver}" )
+	done
+
+	SRC_URI="${my_urls[*]} verify-sig? ( ${my_urls[*]/%/.sig} )"
+	S=${WORKDIR}/${MY_P}
+
+	unset -v my_urls my_p my_patch_idx my_patch_ver
+fi
+
+if [[ ${GENTOO_PATCH_VER} ]]; then
+	SRC_URI+=" https://dev.gentoo.org/~${GENTOO_PATCH_DEV:?}/distfiles/${CATEGORY}/${PN}/${PN}-${GENTOO_PATCH_VER:?}-patches.tar.xz"
+fi
+
+LICENSE="GPL-3+"
+SLOT="0"
+if (( PLEVEL >= 0 )); then
+	KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+fi
+IUSE="afs bashlogger examples mem-scramble +net nls plugins pgo +readline"
+
+DEPEND="
+	>=sys-libs/ncurses-5.2-r2:=
+	nls? ( virtual/libintl )
+"
+if (( PLEVEL >= 0 )); then
+	DEPEND+=" readline? ( >=sys-libs/readline-${READLINE_VER}:= )"
+fi
+RDEPEND="
+	${DEPEND}
+"
+# We only need bison (yacc) when the .y files get patched (bash42-005, bash51-011).
+BDEPEND="
+	pgo? ( dev-util/gperf )
+	verify-sig? ( sec-keys/openpgp-keys-chetramey )
+"
+
+# EAPI 8 tries to append it but it doesn't exist here.
+QA_CONFIGURE_OPTIONS="--disable-static"
+
+PATCHES=(
+	#"${WORKDIR}"/${PN}-${GENTOO_PATCH_VER}/
+
+	# Patches to or from Chet, posted to the bug-bash mailing list.
+	"${FILESDIR}/${PN}-5.0-syslog-history-extern.patch"
+)
+
+pkg_setup() {
+	# bug #7332
+	if is-flag -malign-double; then
+		eerror "Detected bad CFLAGS '-malign-double'.  Do not use this"
+		eerror "as it breaks LFS (struct stat64) on x86."
+		die "remove -malign-double from your CFLAGS mr ricer"
+	fi
+
+	if use bashlogger; then
+		ewarn "The logging patch should ONLY be used in restricted (i.e. honeypot) envs."
+		ewarn "This will log ALL output you enter into the shell, you have been warned."
+	fi
+}
+
+src_unpack() {
+	local patch
+
+	if [[ ${PV} == 9999 ]]; then
+		git-r3_src_unpack
+	elif (( PLEVEL < 0 )) && [[ ${PV} == *_p* ]] ; then
+		default
+	else
+		if use verify-sig; then
+			verify-sig_verify_detached "${DISTDIR}/${MY_P}.tar.gz"{,.sig}
+
+			for patch in "${MY_PATCHES[@]}"; do
+				verify-sig_verify_detached "${patch}"{,.sig}
+			done
+		fi
+
+		unpack "${MY_P}.tar.gz"
+
+		if [[ ${GENTOO_PATCH_VER} ]]; then
+			unpack "${PN}-${GENTOO_PATCH_VER}-patches.tar.xz"
+		fi
+	fi
+}
+
+src_prepare() {
+	# Include official patches.
+	(( PLEVEL > 0 )) && eapply -p0 "${MY_PATCHES[@]}"
+
+	# Clean out local libs so we know we use system ones w/releases. The
+	# touch utility is invoked for the benefit of config.status.
+	if (( PLEVEL >= 0 )); then
+		rm -rf lib/{readline,termcap}/* \
+		&& touch lib/{readline,termcap}/Makefile.in \
+		&& sed -i -E 's:\$[{(](RL|HIST)_LIBSRC[)}]/[[:alpha:]_-]*\.h::g' Makefile.in \
+		|| die
+	fi
+
+	# Prefixify hardcoded path names. No-op for non-prefix.
+	hprefixify pathnames.h.in
+
+	# Avoid regenerating docs after patches, bug #407985.
+	sed -i -E '/^(HS|RL)USER/s:=.*:=:' doc/Makefile.in \
+	&& touch -r . doc/* \
+	|| die
+
+	# Sometimes hangs (more noticeable w/ pgo), bug #907403.
+	rm tests/run-jobs || die
+
+	eapply -p0 "${PATCHES[@]}"
+	eapply_user
+}
+
+src_configure() {
+	local -a myconf
+
+	# Upstream only test with Bison and require GNUisms like YYEOF and
+	# YYERRCODE. The former at least may be in POSIX soon:
+	# https://www.austingroupbugs.net/view.php?id=1269.
+	# configure warns on use of non-Bison but doesn't abort. The result
+	# may misbehave at runtime.
+	unset -v YACC
+
+	# wcsnwidth(), substring() issues with -Wlto-type-mismatch, reported
+	# upstream to Chet by email.
+	filter-lto
+
+	myconf=(
+		--disable-profiling
+
+		# Force linking with system curses ... the bundled termcap lib
+		# sucks bad compared to ncurses.  For the most part, ncurses
+		# is here because readline needs it.  But bash itself calls
+		# ncurses in one or two small places :(.
+		--with-curses
+
+		$(use_enable mem-scramble)
+		$(use_enable net net-redirections)
+		$(use_enable readline)
+		$(use_enable readline bang-history)
+		$(use_enable readline history)
+		$(use_with afs)
+		$(use_with mem-scramble bash-malloc)
+	)
+
+	# For descriptions of these, see config-top.h.
+	# bashrc/#26952 bash_logout/#90488 ssh/#24762 mktemp/#574426
+	append-cppflags \
+		-DDEFAULT_PATH_VALUE=\'\""${EPREFIX}"/usr/local/sbin:"${EPREFIX}"/usr/local/bin:"${EPREFIX}"/usr/sbin:"${EPREFIX}"/usr/bin:"${EPREFIX}"/sbin:"${EPREFIX}"/bin\"\' \
+		-DSTANDARD_UTILS_PATH=\'\""${EPREFIX}"/bin:"${EPREFIX}"/usr/bin:"${EPREFIX}"/sbin:"${EPREFIX}"/usr/sbin\"\' \
+		-DSYS_BASHRC=\'\""${EPREFIX}"/etc/bash/bashrc\"\' \
+		-DSYS_BASH_LOGOUT=\'\""${EPREFIX}"/etc/bash/bash_logout\"\' \
+		-DNON_INTERACTIVE_LOGIN_SHELLS \
+		-DSSH_SOURCE_BASHRC \
+		$(use bashlogger && echo -DSYSLOG_HISTORY)
+
+	use nls || myconf+=( --disable-nls )
+
+	if (( PLEVEL >= 0 )); then
+		# Historically, we always used the builtin readline, but since
+		# our handling of SONAME upgrades has gotten much more stable
+		# in the PM (and the readline ebuild itself preserves the old
+		# libs during upgrades), linking against the system copy should
+		# be safe.
+		# Exact cached version here doesn't really matter as long as it
+		# is at least what's in the DEPEND up above.
+		export ac_cv_rl_version=${READLINE_VER%%_*}
+
+		# Use system readline only with released versions.
+		myconf+=( --with-installed-readline=. )
+	fi
+
+	if use plugins; then
+		append-ldflags "-Wl,-rpath,${EPREFIX}/usr/$(get_libdir)/bash"
+	else
+		# Disable the plugins logic by hand since bash doesn't provide
+		# a way of doing it.
+		export ac_cv_func_dl{close,open,sym}=no \
+			ac_cv_lib_dl_dlopen=no ac_cv_header_dlfcn_h=no
+
+		sed -i -e '/LOCAL_LDFLAGS=/s:-rdynamic::' configure || die
+	fi
+
+	# bug #444070
+	tc-export AR
+
+	econf "${myconf[@]}"
+}
+
+src_compile() {
+	local -a pgo_generate_flags pgo_use_flags
+	local flag
+
+	# -fprofile-partial-training because upstream notes the test suite isn't
+	# super comprehensive.
+	# https://documentation.suse.com/sbp/all/html/SBP-GCC-10/index.html#sec-gcc10-pgo
+	if use pgo; then
+		pgo_generate_flags=(
+			-fprofile-update=atomic
+			-fprofile-dir="${T}"/pgo
+			-fprofile-generate="${T}"/pgo
+		)
+		pgo_use_flags=(
+			-fprofile-use="${T}"/pgo
+			-fprofile-dir="${T}"/pgo
+		)
+		if flag=$(test-flags-CC -fprofile-partial-training); then
+			pgo_generate_flags+=( "${flag}" )
+			pgo_use_flags+=( "${flag}" )
+		fi
+	fi
+
+	emake CFLAGS="${CFLAGS} ${pgo_generate_flags[*]}"
+	use plugins && emake -C examples/loadables CFLAGS="${CFLAGS} ${pgo_generate_flags[*]}" all others
+
+	# Build Bash and run its tests to generate profiles.
+	if (( ${#pgo_generate_flags[@]} )); then
+		# Used in test suite.
+		unset -v A
+
+		emake CFLAGS="${CFLAGS} ${pgo_generate_flags[*]}" -k check
+
+		if tc-is-clang; then
+			llvm-profdata merge "${T}"/pgo --output="${T}"/pgo/default.profdata || die
+		fi
+
+		# Rebuild Bash using the profiling data we just generated.
+		emake clean
+		emake CFLAGS="${CFLAGS} ${pgo_use_flags[*]}"
+		use plugins && emake -C examples/loadables CFLAGS="${CFLAGS} ${pgo_use_flags[*]}" all others
+	fi
+}
+
+src_test() {
+	# Used in test suite.
+	unset -v A
+
+	default
+}
+
+src_install() {
+	local d f
+
+	default
+
+	my_prefixify() {
+		while read -r; do
+			if [[ $REPLY == *$1* ]]; then
+				REPLY=${REPLY/"/etc/"/"${EPREFIX}/etc/"}
+			fi
+			printf '%s\n' "${REPLY}" || ! break
+		done < "$2" || die
+	}
+
+	dodir /bin
+	mv -- "${ED}"/usr/bin/bash "${ED}"/bin/ || die
+	dosym bash /bin/rbash
+
+	insinto /etc/bash
+	doins "${FILESDIR}"/bash_logout
+	my_prefixify bashrc.d "${FILESDIR}"/bashrc-r1 | newins - bashrc
+
+	insinto /etc/bash/bashrc.d
+	my_prefixify DIR_COLORS "${FILESDIR}"/bashrc.d/10-gentoo-color.bash | newins - 10-gentoo-color.bash
+	newins "${FILESDIR}"/bashrc.d/10-gentoo-title-r1.bash 10-gentoo-title.bash
+	if [[ ! ${EPREFIX} ]]; then
+		doins "${FILESDIR}"/bashrc.d/15-gentoo-bashrc-check.bash
+	fi
+
+	insinto /etc/skel
+	for f in bash{_logout,_profile,rc}; do
+		newins "${FILESDIR}/dot-${f}" ".${f}"
+	done
+
+	if use plugins; then
+		exeinto "/usr/$(get_libdir)/bash"
+		set -- examples/loadables/*.o
+		doexe "${@%.o}"
+
+		insinto /usr/include/bash-plugins
+		doins *.h builtins/*.h include/*.h lib/{glob/glob.h,tilde/tilde.h}
+	fi
+
+	if use examples; then
+		for d in examples/{functions,misc,scripts,startup-files}; do
+			exeinto "/usr/share/doc/${PF}/${d}"
+			docinto "${d}"
+			for f in "${d}"/*; do
+				if [[ ${f##*/} != @(PERMISSION|*README) ]]; then
+					doexe "${f}"
+				else
+					dodoc "${f}"
+				fi
+			done
+		done
+	fi
+
+	# Install bash_builtins.1 and rbash.1.
+	emake -C doc DESTDIR="${D}" install_builtins
+	sed 's:bash\.1:man1/&:' doc/rbash.1 > "${T}"/rbash.1 || die
+	doman "${T}"/rbash.1
+
+	newdoc CWRU/changelog ChangeLog
+	dosym bash.info /usr/share/info/bashref.info
+}
+
+pkg_preinst() {
+	if [[ -e ${EROOT}/etc/bashrc ]] && [[ ! -d ${EROOT}/etc/bash ]]; then
+		mkdir -p -- "${EROOT}"/etc/bash \
+		&& mv -f -- "${EROOT}"/etc/bashrc "${EROOT}"/etc/bash/ \
+		|| die
+	fi
+}
+
+pkg_postinst() {
+	local old_ver
+
+	# If /bin/sh does not exist, provide it.
+	if [[ ! -e ${EROOT}/bin/sh ]]; then
+		ln -sf -- bash "${EROOT}"/bin/sh || die
+	fi
+
+	read -r old_ver <<<"${REPLACING_VERSIONS}"
+	if [[ ! $old_ver ]]; then
+		:
+	elif ver_test "$old_ver" -ge "5.2" && ver_test "$old_ver" -ge "5.2_p26-r8"; then
+		return
+	fi
+
+	while read -r; do ewarn "${REPLY}"; done <<'EOF'
+Files under /etc/bash/bashrc.d must now have a suffix of .sh or .bash.
+
+Gentoo now defaults to defining PROMPT_COMMAND as an array. Depending on the
+characteristics of the operating environment, it may contain a command to set
+the terminal's window title. Those who were already choosing to customise the
+PROMPT_COMMAND variable are now advised to append their commands like so:
+
+PROMPT_COMMAND+=('custom command goes here')
+
+Gentoo no longer defaults to having bash set the window title in the case
+that the terminal is controlled by sshd(8), unless screen is launched on the
+remote side or the terminal reliably supports saving and restoring the title
+(as alacritty, foot and tmux do). Those wanting for the title to be set
+regardless may adjust ~/.bashrc - or create a custom /etc/bash/bashrc.d
+drop-in - to set PROMPT_COMMMAND like so:
+
+PROMPT_COMMAND=(genfun_set_win_title)
+
+Those who would prefer for bash never to interfere with the window title may
+now opt out of the default title setting behaviour, either with the "unset -v
+PROMPT_COMMAND" command or by re-defining PROMPT_COMMAND as desired.
+EOF
+}