Replace the ebuild phase setting code for EAPI 2 and newer with a
simpler approach; first set proper default_* functions, and call them
within the phase. Disallow calling default_* for other phase functions
than the one being run.
---
 bin/phase-functions.sh | 117 ++++++++++++++++++++++---------------------------
 bin/save-ebuild-env.sh |   2 +-
 2 files changed, 53 insertions(+), 66 deletions(-)

diff --git a/bin/phase-functions.sh b/bin/phase-functions.sh
index f39a024..b7fb5d7 100644
--- a/bin/phase-functions.sh
+++ b/bin/phase-functions.sh
@@ -734,91 +734,78 @@ __ebuild_phase_funcs() {
        [ $# -ne 2 ] && die "expected exactly 2 args, got $#: $*"
        local eapi=$1
        local phase_func=$2
-       local default_phases="pkg_nofetch src_unpack src_prepare src_configure
-               src_compile src_install src_test"
-       local x y default_func=""
-
-       for x in pkg_nofetch src_unpack src_test ; do
-               declare -F $x >/dev/null || \
-                       eval "$x() { __eapi0_$x \"\$@\" ; }"
+       local all_phases="src_compile pkg_config src_configure pkg_info
+               src_install pkg_nofetch pkg_postinst pkg_postrm pkg_preinst
+               src_prepare pkg_prerm pkg_pretend pkg_setup src_test src_unpack"
+       local x
+
+       # First, set up the error handlers for default*
+       for x in ${all_phases} ; do
+               eval "default_${x}() {
+                       die \"default_${x}() is not supported in EAPI='${eapi}' 
in phase ${phase_func}\"
+               }"
        done
 
+       # We can just call the specific handler -- it will either error out
+       # on invalid phase or run it.
+       eval "default() {
+               default_${phase_func}
+       }"
+
        case "$eapi" in
+               0|1) # EAPIs not supporting 'default'
 
-               0|1)
+                       for x in pkg_nofetch src_unpack src_test ; do
+                               declare -F $x >/dev/null || \
+                                       eval "$x() { __eapi0_$x; }"
+                       done
 
                        if ! declare -F src_compile >/dev/null ; then
                                case "$eapi" in
                                        0)
-                                               src_compile() { 
__eapi0_src_compile "$@" ; }
+                                               src_compile() { 
__eapi0_src_compile; }
                                                ;;
                                        *)
-                                               src_compile() { 
__eapi1_src_compile "$@" ; }
+                                               src_compile() { 
__eapi1_src_compile; }
                                                ;;
                                esac
                        fi
-
-                       for x in $default_phases ; do
-                               eval "default_$x() {
-                                       die \"default_$x() is not supported 
with EAPI='$eapi' during phase $phase_func\"
-                               }"
-                       done
-
-                       eval "default() {
-                               die \"default() is not supported with 
EAPI='$eapi' during phase $phase_func\"
-                       }"
-
                        ;;
 
-               *)
-
+               *) # EAPIs supporting 'default'
+
+                       # defaults starting with EAPI 0
+                       [[ ${phase_func} == pkg_nofetch ]] && \
+                               default_pkg_nofetch() { __eapi0_pkg_nofetch; }
+                       [[ ${phase_func} == src_unpack ]] && \
+                               default_src_unpack() { __eapi0_src_unpack; }
+                       [[ ${phase_func} == src_test ]] && \
+                               default_src_test() { __eapi0_src_test; }
+
+                       # defaults starting with EAPI 2
+                       [[ ${phase_func} == src_configure ]] && \
+                               default_src_configure() { 
__eapi2_src_configure; }
+                       [[ ${phase_func} == src_compile ]] && \
+                               default_src_compile() { __eapi2_src_compile; }
+
+                       # bind supported phases to the defaults
+                       declare -F src_unpack >/dev/null || \
+                               src_unpack() { default; }
                        declare -F src_configure >/dev/null || \
-                               src_configure() { __eapi2_src_configure "$@" ; }
-
+                               src_configure() { default; }
                        declare -F src_compile >/dev/null || \
-                               src_compile() { __eapi2_src_compile "$@" ; }
-
-                       has $eapi 2 3 || declare -F src_install >/dev/null || \
-                               src_install() { __eapi4_src_install "$@" ; }
+                               src_compile() { default; }
+                       declare -F src_test >/dev/null || \
+                               src_test() { default; }
 
-                       if has $phase_func $default_phases ; then
-
-                               __eapi2_pkg_nofetch   () { __eapi0_pkg_nofetch  
        "$@" ; }
-                               __eapi2_src_unpack    () { __eapi0_src_unpack   
        "$@" ; }
-                               __eapi2_src_prepare   () { true                 
            ; }
-                               __eapi2_src_test      () { __eapi0_src_test     
        "$@" ; }
-                               __eapi2_src_install   () { die "$FUNCNAME is 
not supported" ; }
-
-                               for x in $default_phases ; do
-                                       eval "default_$x() { __eapi2_$x \"\$@\" 
; }"
-                               done
-
-                               eval "default() { __eapi2_$phase_func \"\$@\" ; 
}"
-
-                               case "$eapi" in
-                                       2|3)
-                                               ;;
-                                       *)
-                                               eval "default_src_install() { 
__eapi4_src_install \"\$@\" ; }"
-                                               [[ $phase_func = src_install ]] 
&& \
-                                                       eval "default() { 
__eapi4_$phase_func \"\$@\" ; }"
-                                               ;;
-                               esac
-
-                       else
-
-                               for x in $default_phases ; do
-                                       eval "default_$x() {
-                                               die \"default_$x() is not 
supported in phase $default_func\"
-                                       }"
-                               done
-
-                               eval "default() {
-                                       die \"default() is not supported with 
EAPI='$eapi' during phase $phase_func\"
-                               }"
+                       # defaults starting with EAPI 4
+                       if ! has ${eapi} 2 3; then
+                               [[ ${phase_func} == src_install ]] && \
+                                       default_src_install() { 
__eapi4_src_install; }
 
+                               declare -F src_install >/dev/null || \
+                                       src_install() { default; }
                        fi
-
                        ;;
        esac
 }
diff --git a/bin/save-ebuild-env.sh b/bin/save-ebuild-env.sh
index 98cff83..de0c499 100644
--- a/bin/save-ebuild-env.sh
+++ b/bin/save-ebuild-env.sh
@@ -42,7 +42,7 @@ __save_ebuild_env() {
 
        for x in pkg_setup pkg_nofetch src_unpack src_prepare src_configure \
                src_compile src_test src_install pkg_preinst pkg_postinst \
-               pkg_prerm pkg_postrm ; do
+               pkg_prerm pkg_postrm pkg_config pkg_info pkg_pretend ; do
                unset -f default_$x __eapi{0,1,2,3,4}_$x
        done
        unset x
-- 
2.0.4


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