15 files changed, 95 insertions, 72 deletions
diff --git a/build-aux/Makefile.each.head/00-files.mk b/build-aux/Makefile.each.head/00-files.mk
index c9a94e1..c4820cf 100644
--- a/build-aux/Makefile.each.head/00-files.mk
+++ b/build-aux/Makefile.each.head/00-files.mk
@@ -17,13 +17,16 @@ files.src.src ?=
 files.src.int ?=
 files.src.cfg ?=
 files.src.gen ?=
-files.src = $(sort $(foreach _files.v,$(filter files.src.%,$(.VARIABLES)),$($(_files.v))))
 
 files.out.slow ?=
 files.out.int ?=
 files.out.cfg ?=
-$(eval $(foreach t,$(files.groups),files.out.$t ?=$(at.nl)))
-files.out = $(sort $(foreach _files.v,$(filter files.out.%,$(.VARIABLES)),$($(_files.v))))
 
-$(eval $(foreach t,$(files.groups),files.sys.$t ?=$(at.nl)))
-files.sys = $(sort $(foreach _files.v,$(filter files.sys.%,$(.VARIABLES)),$($(_files.v))))
+# define files.out.$(group) files.sys.$(group) for every files.group
+$(eval $(foreach t,$(files.groups),files.out.$t ?=$(at.nl)files.sys.$t ?=$(at.nl)))
+
+# define files.src, files.out, and files.sys aggregates
+$(eval \
+  files.src = $$(sort $(foreach _files.v,$(filter files.src.%,$(.VARIABLES)),$$($(_files.v))))$(at.nl)\
+  files.out = $$(sort $(foreach _files.v,$(filter files.out.%,$(.VARIABLES)),$$($(_files.v))))$(at.nl)\
+  files.sys = $$(sort $(foreach _files.v,$(filter files.sys.%,$(.VARIABLES)),$$($(_files.v)))))
diff --git a/build-aux/Makefile.each.head/zz-mod.mk b/build-aux/Makefile.each.head/zz-mod.mk
deleted file mode 100644
index b83c223..0000000
--- a/build-aux/Makefile.each.head/zz-mod.mk
+++ /dev/null
@@ -1 +0,0 @@
-_mod.each := $(sort $(_mod.each) $(filter-out $(_mod.once),$(_mod.vars)))
diff --git a/build-aux/Makefile.each.tail/00-dist.mk b/build-aux/Makefile.each.tail/00-dist.mk
new file mode 100644
index 0000000..df363b5
--- /dev/null
+++ b/build-aux/Makefile.each.tail/00-dist.mk
@@ -0,0 +1 @@
+_dist.files := $(strip $(_dist.files) $(_files.src))
diff --git a/build-aux/Makefile.each.tail/00-mod.mk b/build-aux/Makefile.each.tail/00-mod.mk
new file mode 100644
index 0000000..6346173
--- /dev/null
+++ b/build-aux/Makefile.each.tail/00-mod.mk
@@ -0,0 +1,41 @@
+# Copyright (C) 2016  Luke Shumaker
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+$(outdir)/at-variables $(outdir)/at-variables-local: _mod.VARIABLES := $(filter-out $(call _mod.quote-pattern,$(_at.VARIABLES)),$(.VARIABLES))
+$(outdir)/at-variables-global:
+	@printf '%s\n' $(call _mod.quote-shell-each,$(sort $(.VARIABLES)))
+$(outdir)/at-variables-local:
+	@printf '%s\n' $(call _mod.quote-shell-each,$(sort $(_mod.VARIABLES)))
+$(outdir)/at-variables $(outdir)/at-values:
+	@printf '%s\n' $(call _mod.quote-shell-each,$(sort $(.VARIABLES),$(_mod.VARIABLES)))
+$(outdir)/at-variables/%:
+	@printf '%s\n' $(call _mod.quote-shell,$($*))
+$(outdir)/at-values/%:
+	@printf '%s\n' $(call _mod.quote-shell,$(value $*))
+.PHONY:       $(addprefix $(outdir)/, at-variables-global at-variables-local at-variables at-values)
+at.targets += $(addprefix $(outdir)/, at-variables-global at-variables-local at-variables at-values at-variables/% at-values/%)
+
+$(outdir)/at-modules:
+	@printf 'Autothing modules used in this project:\n'
+	@printf ' - %s\n' $(foreach _mod.tmp,$(_mod.modules),$(call _mod.quote-shell,$(_mod.tmp)	$(mod.$(_mod.tmp).description)))|column -t -s $$'\t'
+$(addprefix $(outdir)/at-modules/,$(_mod.modules)): $(outdir)/at-modules/%:
+	@printf 'Name           : %s\n' $(call _mod.quote-shell,$*)
+	@printf 'Description    : %s\n' $(call _mod.quote-shell,$(mod.$*.description))
+	@echo   'Contains Files :' $(call _mod.quote-shell-each,$(call at.relto,$(topsrcdir),$(sort $(mod.$*.files) $(wildcard $(topsrcdir)/build-aux/Makefile.*/??-$*.mk))))
+	@echo   'Depends on     :' $(mod.$*.depends)
+
+$(outdir)/at-noop:
+.PHONY:       $(outdir)/at-noop
+at.targets += $(outdir)/at-noop
diff --git a/build-aux/Makefile.each.tail/10-nested.mk b/build-aux/Makefile.each.tail/10-nested.mk
index e9d02ca..5e5a40b 100644
--- a/build-aux/Makefile.each.tail/10-nested.mk
+++ b/build-aux/Makefile.each.tail/10-nested.mk
@@ -13,7 +13,8 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-$(addprefix $(outdir)/,$(nested.targets)): $(outdir)/%: $(addsuffix /%,$(call at.addprefix,$(outdir),$(nested.subdirs)))
+$(eval $(foreach _tmp.nested,$(nested.targets),\
+  $$(outdir)/$(_tmp.nested): $$(addsuffix /$(_tmp.nested),$$(call at.addprefix,$$(outdir),$$(nested.subdirs)))$(at.nl)))
 .PHONY: $(addprefix $(outdir)/,$(nested.targets))
 
 at.subdirs += $(nested.subdirs)
diff --git a/build-aux/Makefile.head.mk b/build-aux/Makefile.head.mk
index 105432c..c2ce307 100644
--- a/build-aux/Makefile.head.mk
+++ b/build-aux/Makefile.head.mk
@@ -24,13 +24,13 @@ ifeq ($(origin _at.NO_ONCE),undefined)
 # These 4 functions are all $(call _at.func,parent,child)
 _at.is_strict_subdir  = $(filter $(abspath $1)/%,$(abspath $2))
 _at.is_subdir         = $(filter $(abspath $1)/%,$(abspath $2)/.)
-_at.relbase = $(strip                                 \
-  $(if $(call _at.is_subdir,$1,$2),                   \
-       $(patsubst $(abspath $1)/%,%,$(abspath $2)/.), \
+_at.relbase = $(strip                                                 \
+  $(if $(call _at.is_subdir,$1,$2),                                   \
+       $(patsubst %/.,$(patsubst $(abspath $1)/%,%,$(abspath $2)/.)), \
        $(abspath $2)))
-_at.relto = $(strip                                   \
-  $(if $(call _at.is_subdir,$1,$2),                   \
-       $(patsubst $(abspath $1)/%,%,$(abspath $2)/.), \
+_at.relto = $(strip                                                     \
+  $(if $(call _at.is_subdir,$1,$2),                                     \
+       $(patsubst %/.,%,$(patsubst $(abspath $1)/%,%,$(abspath $2)/.)), \
        ../$(call _at.relto,$(dir $1),$2)))
 
 # These 3 functions only take one operand; we define public multi-operand
@@ -51,6 +51,8 @@ _at.target_variable           = $(_at.target_variable.$(flavor $2))
 _at.target_variable.recursive = $1: private $2  = $(subst $(at.nl),$$(at.nl),$(value $2))
 _at.target_variable.simple    = $1: private $2 := $$($2)
 
+_at.quote-pattern = $(subst %,\%,$(subst \,\\,$1))
+
 # Sanity checking ######################################################
 ifeq ($(filter undefine,$(.FEATURES)),)
 $(error Autothing: We need a version of Make that supports 'undefine')
diff --git a/build-aux/Makefile.once.head/10-dist.mk b/build-aux/Makefile.once.head/10-dist.mk
index 0e13ea2..e139096 100644
--- a/build-aux/Makefile.once.head/10-dist.mk
+++ b/build-aux/Makefile.once.head/10-dist.mk
@@ -13,7 +13,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-mod.dist.description = Make distribution tarballs
+mod.dist.description = `dist` target for distribution tarballs
 
 # Developer configuration
 
@@ -28,6 +28,8 @@ ifeq ($(dist.version),)
 $(error Autothing module: dist: dist.version must be set)
 endif
 
+_dist.files =
+
 # User configuration
 
 CP      ?= cp
diff --git a/build-aux/Makefile.once.head/10-files.mk b/build-aux/Makefile.once.head/10-files.mk
index 2af7bf8..5441735 100644
--- a/build-aux/Makefile.once.head/10-files.mk
+++ b/build-aux/Makefile.once.head/10-files.mk
@@ -24,7 +24,10 @@ files.generate ?= files.generate
 .DEFAULT_GOAL = $(files.default)
 
 # Standard creative PHONY targets
-nested.targets += $(foreach g,$(files.groups), $g install-$g install-$gdirs)
+nested.targets += $(files.generate)
+nested.targets += install installdirs
+nested.targets += $(foreach g,$(files.groups),$g)
+nested.targets += $(foreach g,$(filter-out $(files.default),$(files.groups)),install-$g install-$gdirs)
 # Standard destructive PHONY targets
 nested.targets += uninstall mostlyclean clean distclean maintainer-clean
 
diff --git a/build-aux/Makefile.once.head/10-lt.mk b/build-aux/Makefile.once.head/10-lt.mk
deleted file mode 100644
index c8410d4..0000000
--- a/build-aux/Makefile.once.head/10-lt.mk
+++ /dev/null
@@ -1,12 +0,0 @@
-mod.lt.description = Easy handling of libtool dependencies
-mod.lt.deps += files
-
-_lt.dups = $(sort $(foreach l,$1,$(if $(filter-out 1,$(words $(filter $l,$1))),$l)))
-_lt.patsubst-all = $(if $1,$(call _sd.patsubst-all,$(wordlist 2,$(words $1),$1),$2,$(patsubst $(firstword $1),$2,$3)),$3)
-_lt.unLIBPATTERNS = $(foreach _lt.tmp,$1,$(if $(filter $(.LIBPATTERNS),$(_lt.tmp)),$(call _lt.patsubst-all,$(.LIBPATTERNS),-l%,$(_lt.tmp)),$(_lt.tmp)))
-
-# The semantics for the de-dup bit are a bit weird.  My head hurts thinking
-# about them.  TODO: clarify/simplify/something
-lt.rpath = $(dir $(patsubst $(DESTDIR)%,%,$(filter %/$(@F),$(files.sys))))
-_lt.link_files = $(filter %.o %.lo %.la -l%,$(call _lt.unLIBPATTERNS$,$^))
-lt.link_files = $(filter-out $(call _lt.dups,$(_lt.link_files)),$(_lt.link_files))
diff --git a/build-aux/Makefile.once.head/10-write-ifchanged.mk b/build-aux/Makefile.once.head/10-write-ifchanged.mk
index 7917201..b0a5ac4 100644
--- a/build-aux/Makefile.once.head/10-write-ifchanged.mk
+++ b/build-aux/Makefile.once.head/10-write-ifchanged.mk
@@ -1,3 +1,4 @@
-mod.write-ifchanged.description = build-aux/write-ifchanged helper script
+mod.write-ifchanged.description = `write-ifchanged` auxiliary build script
+mod.write-ifchanged.files += $(topsrcdir)/build-aux/write-ifchanged
 
 WRITE_IFCHANGED ?= $(topsrcdir)/build-aux/write-ifchanged
diff --git a/build-aux/Makefile.once.head/zz-mod.mk b/build-aux/Makefile.once.head/zz-mod.mk
index 7e52606..438f01e 100644
--- a/build-aux/Makefile.once.head/zz-mod.mk
+++ b/build-aux/Makefile.once.head/zz-mod.mk
@@ -13,14 +13,30 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-mod.mod.description = Print information about Autothing modules
+mod.mod.description = Display information about Autothing modules
 
-_mod.target = at-mod-info
-_mod.modules := $(sort $(patsubst %.mk,%,$(filter %.mk,$(subst -, ,$(notdir $(wildcard $(topsrcdir)/build-aux/Makefile.*/??-*.mk))))))
-_mod.quote = '$(subst ','\'',$1)'
+# The trickery that is _mod.empty/_mod.space is from §6.2 of the GNU Make
+# manual, "The Two Flavors of Variables".
+_mod.empty :=
+_mod.space := $(_mod.empty) #
+undefine _mod.empty
+# _mod.rest is equivalent to GMSL rest.
+_mod.rest = $(wordlist 2,$(words $1),$1)
 
-$(eval $(foreach _mod.tmp,$(_mod.modules),mod.$(_mod.tmp).description ?=$(at.nl)mod.$(_mod.tmp).depends ?=$(at.nl)))
+_mod.file2mod = $(foreach _mod.tmp,$(patsubst %.mk,%,$(notdir $1)),$(subst $(_mod.space),-,$(call _mod.rest,$(subst -, ,$(_mod.tmp)))))
 
-_mod.vars = $(filter $(addsuffix .%,$(_mod.modules)),$(.VARIABLES))
-_mod.once := $(_mod.vars)
-_mod.each :=
+_mod.modules := $(sort $(call _mod.file2mod,$(wildcard $(topsrcdir)/build-aux/Makefile.*/??-*.mk)))
+undefine _mod.rest
+undefine _mod.file2mod
+
+$(eval $(foreach _mod.tmp,$(_mod.modules),\
+  mod.$(_mod.tmp).description ?=$(at.nl)\
+  mod.$(_mod.tmp).depends ?=$(at.nl)\
+  mod.$(_mod.tmp).files ?=$(at.nl)))
+
+_mod.quote-pattern = $(subst %,\%,$(subst \,\\,$1))
+_mod.quote-shell-each = $(foreach _mod.tmp,$1,$(call _mod.quote-shell,$(_mod.tmp)))
+
+# I put this as the last line in the file because it confuses Emacs syntax
+# highlighting and makes the remainder of the file difficult to edit.
+_mod.quote-shell = $(subst $(at.nl),'$$'\n'','$(subst ','\'',$1)')
diff --git a/build-aux/Makefile.once.tail/00-dist.mk b/build-aux/Makefile.once.tail/00-dist.mk
index 6c6aaed..3fbe0c4 100644
--- a/build-aux/Makefile.once.tail/00-dist.mk
+++ b/build-aux/Makefile.once.tail/00-dist.mk
@@ -15,7 +15,7 @@
 
 _dist.copyfile = $(MKDIR_P) $(dir $2) && $(CP) -T $1 $2
 _dist.addfile = $(call _dist.copyfile,$3,$2/$(call at.relto,$1,$3))
-$(topoutdir)/$(dist.pkgname)-$(dist.version): $(foreach v,$(filter std.src_files/% std.gen_files/%,$(.VARIABLES)),$($v))
+$(topoutdir)/$(dist.pkgname)-$(dist.version): $(_dist.files)
 	$(RM) -r $@ $(@D)/.tmp.$(@F)
 	$(MKDIR) $(@D)/.tmp.$(@F)
 	$(foreach f,$^,$(call _dist.addfile,$(topsrcdir),$(@D)/.tmp.$(@F),$f)$(at.nl))
diff --git a/build-aux/Makefile.once.tail/00-mod.mk b/build-aux/Makefile.once.tail/00-mod.mk
deleted file mode 100644
index 68350f0..0000000
--- a/build-aux/Makefile.once.tail/00-mod.mk
+++ /dev/null
@@ -1,32 +0,0 @@
-# Copyright (C) 2016  Luke Shumaker
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU Affero General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
-# GNU Affero General Public License for more details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-$(_mod.target):
-	@printf 'Autothing modules used in this project:\n'
-	@printf ' - %s\n' $(foreach _mod.tmp,$(_mod.modules),$(call _mod.quote,$(_mod.tmp)))
-$(addprefix $(_mod.target)/,$(_mod.modules)): $(_mod.target)/%:
-	@printf 'Module : %s ' $(call _mod.quote,$*)
-	@$(if $(at.mod.$*.description),printf ' - %s' $(call _mod.quote,mod.$*.description))
-	@echo
-	@echo Depends on : $(mod.$*.depends)
-	@echo User configuration:
-	@egrep '^\s*[^:#]+\s*\?=' $(topsrcdir)/build-aux/Makefile.once.head/??-$*.mk 2>/dev/null | sed 's|^\s*||;s|?=|:' | grep -v -e ^'_' -e ^'$*' | column -t -s: |sed 's|^|    |'
-	@echo Developer global inputs:
-	@egrep '^\s*[^:#]+\s*\?=' $(topsrcdir)/build-aux/Makefile.once.head/??-$*.mk 2>/dev/null | sed 's|^\s*||;s|?=|:' | grep ^'$*\.' | column -t -s: |sed 's|^|    |'
-	@echo Developer per-directory inputs:
-	@egrep '^\s*[^:#]+\s*\?=' $(topsrcdir)/build-aux/Makefile.each.head/??-$*.mk 2>/dev/null | sed 's|^\s*||;s|?=|:' | grep ^'$*\.' | column -t -s: |sed 's|^|    |'
-	@echo Developer outputs:
-	@egrep '^\s*[^:#]+\s*(|:|::)=' $(topsrcdir)/build-aux/Makefile.once.head/??-$*.mk 2>/dev/null | sed 's|^\s*||;s|?=|:' | grep ^'$*\.' | column -t -s: |sed 's|^|    |'
-.PHONY: $(addprefix mod/,$(_mod.modules))
diff --git a/build-aux/Makefile.once.tail/00-noop.mk b/build-aux/Makefile.once.tail/00-noop.mk
deleted file mode 100644
index bac2ec1..0000000
--- a/build-aux/Makefile.once.tail/00-noop.mk
+++ /dev/null
@@ -1,2 +0,0 @@
-noop:
-.PHONY: noop
diff --git a/build-aux/Makefile.tail.mk b/build-aux/Makefile.tail.mk
index aeba2d1..2e4adc6 100644
--- a/build-aux/Makefile.tail.mk
+++ b/build-aux/Makefile.tail.mk
@@ -22,7 +22,7 @@ _at.tmp_subdirs := $(call at.addprefix,$(outdir),$(at.subdirs))
 
 # Clean the environment
 $(eval \
-  $(foreach _at.tmp_variable,$(filter-out _at.tmp_variable $(_at.VARIABLES),$(.VARIABLES)),\
+  $(foreach _at.tmp_variable,$(filter-out $(call _at.quote-pattern,_at.tmp_variable $(_at.VARIABLES)),$(.VARIABLES)),\
     $(call _at.target_variable,$(_at.tmp_targets),$(_at.tmp_variable))$(at.nl)\
     undefine $(_at.tmp_variable)$(at.nl)))