maint: update bootstrap and gnulib submodule

* bootstrap: Update from gnulib.

3 files changed, 176 insertions, 93 deletions

diff --git a/bootstrap b/bootstrap
index 31eb651..e3e270b 100755
--- a/bootstrap
+++ b/bootstrap
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Print a version string.
-scriptversion=2012-02-11.09; # UTC
+scriptversion=2012-07-19.14; # UTC
 
 # Bootstrap this package from checked-out sources.
 
@@ -36,6 +36,10 @@ nl='
 LC_ALL=C
 export LC_ALL
 
+# Ensure that CDPATH is not set.  Otherwise, the output from cd
+# would cause trouble in at least one use below.
+(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
+
 local_gl_dir=gl
 
 me=$0
@@ -73,6 +77,33 @@ Running without arguments will suffice in most cases.
 EOF
 }
 
+# warnf_ FORMAT-STRING ARG1...
+warnf_ ()
+{
+  warnf_format_=$1
+  shift
+  nl='
+'
+  case $* in
+    *$nl*) me_=$(printf "$me"|tr "$nl|" '??')
+       printf "$warnf_format_" "$@" | sed "s|^|$me_: |" ;;
+    *) printf "$me: $warnf_format_" "$@" ;;
+  esac >&2
+}
+
+# warn_ WORD1...
+warn_ ()
+{
+  # If IFS does not start with ' ', set it and emit the warning in a subshell.
+  case $IFS in
+    ' '*) warnf_ '%s\n' "$*";;
+    *)    (IFS=' '; warn_ "$@");;
+  esac
+}
+
+# die WORD1...
+die() { warn_ "$@"; exit 1; }
+
 # Configuration.
 
 # Name of the Makefile.am
@@ -126,7 +157,8 @@ extract_package_name='
      p
   }
 '
-package=`sed -n "$extract_package_name" configure.ac` || exit
+package=$(sed -n "$extract_package_name" configure.ac) \
+  || die 'cannot find package name in configure.ac'
 gnulib_name=lib$package
 
 build_aux=build-aux
@@ -182,6 +214,8 @@ use_git=true
 # otherwise find the first of the NAMES that can be run (i.e.,
 # supports --version).  If found, set ENVVAR to the program name,
 # die otherwise.
+#
+# FIXME: code duplication, see also gnu-web-doc-update.
 find_tool ()
 {
   find_tool_envvar=$1
@@ -199,19 +233,15 @@ find_tool ()
   else
     find_tool_error_prefix="\$$find_tool_envvar: "
   fi
-  if test x"$find_tool_res" = x; then
-    echo >&2 "$me: one of these is required: $find_tool_names"
-    exit 1
-  fi
-  ($find_tool_res --version </dev/null) >/dev/null 2>&1 || {
-    echo >&2 "$me: ${find_tool_error_prefix}cannot run $find_tool_res --version"
-    exit 1
-  }
+  test x"$find_tool_res" != x \
+    || die "one of these is required: $find_tool_names"
+  ($find_tool_res --version </dev/null) >/dev/null 2>&1 \
+    || die "${find_tool_error_prefix}cannot run $find_tool_res --version"
   eval "$find_tool_envvar=\$find_tool_res"
   eval "export $find_tool_envvar"
 }
 
-# Find sha1sum, named gsha1sum on MacPorts, and shasum on MacOS 10.6.
+# Find sha1sum, named gsha1sum on MacPorts, and shasum on Mac OS X 10.6.
 find_tool SHA1SUM sha1sum gsha1sum shasum
 
 # Override the default configuration, if necessary.
@@ -226,7 +256,6 @@ esac
 test -z "${gnulib_extra_files}" && \
   gnulib_extra_files="
         $build_aux/install-sh
-        $build_aux/missing
         $build_aux/mdate-sh
         $build_aux/texinfo.tex
         $build_aux/depcomp
@@ -252,7 +281,7 @@ do
     usage
     exit;;
   --gnulib-srcdir=*)
-    GNULIB_SRCDIR=`expr "X$option" : 'X--gnulib-srcdir=\(.*\)'`;;
+    GNULIB_SRCDIR=${option#--gnulib-srcdir=};;
   --skip-po)
     SKIP_PO=t;;
   --force)
@@ -266,21 +295,15 @@ do
   --no-git)
     use_git=false;;
   *)
-    echo >&2 "$0: $option: unknown option"
-    exit 1;;
+    die "$option: unknown option";;
   esac
 done
 
-if $use_git || test -d "$GNULIB_SRCDIR"; then
-  :
-else
-  echo "$0: Error: --no-git requires --gnulib-srcdir" >&2
-  exit 1
-fi
+$use_git || test -d "$GNULIB_SRCDIR" \
+  || die "Error: --no-git requires --gnulib-srcdir"
 
 if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
-  echo "$0: Bootstrapping from a non-checked-out distribution is risky." >&2
-  exit 1
+  die "Bootstrapping from a non-checked-out distribution is risky."
 fi
 
 # Ensure that lines starting with ! sort last, per gitignore conventions
@@ -303,10 +326,10 @@ insert_sorted_if_absent() {
   file=$1
   str=$2
   test -f $file || touch $file
-  echo "$str" | sort_patterns - $file | cmp - $file > /dev/null \
+  echo "$str" | sort_patterns - $file | cmp -s - $file > /dev/null \
     || { echo "$str" | sort_patterns - $file > $file.bak \
       && mv $file.bak $file; } \
-    || exit 1
+    || die "insert_sorted_if_absent $file $str: failed"
 }
 
 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
@@ -319,7 +342,7 @@ insert_vc_ignore() {
     # A .gitignore entry that does not start with '/' applies
     # recursively to subdirectories, so prepend '/' to every
     # .gitignore entry.
-    pattern=`echo "$pattern" | sed s,^,/,`;;
+    pattern=$(echo "$pattern" | sed s,^,/,);;
   esac
   insert_sorted_if_absent "$vc_ignore_file" "$pattern"
 }
@@ -330,11 +353,8 @@ grep '^[	 ]*AC_CONFIG_AUX_DIR(\['"$build_aux"'\])' configure.ac \
     >/dev/null && found_aux_dir=yes
 grep '^[	 ]*AC_CONFIG_AUX_DIR('"$build_aux"')' configure.ac \
     >/dev/null && found_aux_dir=yes
-if test $found_aux_dir = no; then
-  echo "$0: expected line not found in configure.ac. Add the following:" >&2
-  echo "  AC_CONFIG_AUX_DIR([$build_aux])" >&2
-  exit 1
-fi
+test $found_aux_dir = yes \
+  || die "configure.ac lacks 'AC_CONFIG_AUX_DIR([$build_aux])'; add it"
 
 # If $build_aux doesn't exist, create it now, otherwise some bits
 # below will malfunction.  If creating it, also mark it as ignored.
@@ -423,31 +443,48 @@ check_versions() {
       $use_git || continue
     fi
     # Honor $APP variables ($TAR, $AUTOCONF, etc.)
-    appvar=`echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_'`
+    appvar=$(echo $app | LC_ALL=C tr '[a-z]-' '[A-Z]_')
     test "$appvar" = TAR && appvar=AMTAR
     case $appvar in
         GZIP) ;; # Do not use $GZIP:  it contains gzip options.
         *) eval "app=\${$appvar-$app}" ;;
     esac
+
+    # Handle the still-experimental Automake-NG programs specially.
+    # They remain named as the mainstream Automake programs ("automake",
+    # and "aclocal") to avoid gratuitous incompatibilities with
+    # pre-existing usages (by, say, autoreconf, or custom autogen.sh
+    # scripts), but correctly identify themselves (as being part of
+    # "GNU automake-ng") when asked their version.
+    case $app in
+      automake-ng|aclocal-ng)
+        app=${app%-ng}
+        ($app --version | grep '(GNU automake-ng)') >/dev/null 2>&1 || {
+          warn_ "Error: '$app' not found or not from Automake-NG"
+          ret=1
+          continue
+        } ;;
+    esac
     if [ "$req_ver" = "-" ]; then
       # Merely require app to exist; not all prereq apps are well-behaved
       # so we have to rely on $? rather than get_version.
       $app --version >/dev/null 2>&1
       if [ 126 -le $? ]; then
-        echo "$me: Error: '$app' not found" >&2
+        warn_ "Error: '$app' not found"
         ret=1
       fi
     else
       # Require app to produce a new enough version string.
       inst_ver=$(get_version $app)
       if [ ! "$inst_ver" ]; then
-        echo "$me: Error: '$app' not found" >&2
+        warn_ "Error: '$app' not found"
         ret=1
       else
         latest_ver=$(sort_ver $req_ver $inst_ver | cut -d' ' -f2)
         if [ ! "$latest_ver" = "$inst_ver" ]; then
-          echo "$me: Error: '$app' version == $inst_ver is too old" >&2
-          echo "       '$app' version >= $req_ver is required" >&2
+          warnf_ '%s\n'                                        \
+              "Error: '$app' version == $inst_ver is too old"  \
+              "       '$app' version >= $req_ver is required"
           ret=1
         fi
       fi
@@ -492,10 +529,8 @@ esac
 
 # When we can deduce that gnulib-tool will require patch,
 # and when patch is not already listed as a prerequisite, add it, too.
-if test ! -d "$local_gl_dir" \
-    || find "$local_gl_dir" -name '*.diff' -exec false {} +; then
-  :
-else
+if test -d "$local_gl_dir" \
+    && ! find "$local_gl_dir" -name '*.diff' -exec false {} +; then
   case $buildreq in
     *patch*) ;;
     *) buildreq="patch -
@@ -506,11 +541,10 @@ fi
 if ! printf "$buildreq" | check_versions; then
   echo >&2
   if test -f README-prereq; then
-    echo "$0: See README-prereq for how to get the prerequisite programs" >&2
+    die "See README-prereq for how to get the prerequisite programs"
   else
-    echo "$0: Please install the prerequisite programs" >&2
+    die "Please install the prerequisite programs"
   fi
-  exit 1
 fi
 
 echo "$0: Bootstrapping from checked-out $package sources..."
@@ -539,7 +573,7 @@ git_modules_config () {
   test -f .gitmodules && git config --file .gitmodules "$@"
 }
 
-gnulib_path=`git_modules_config submodule.gnulib.path`
+gnulib_path=$(git_modules_config submodule.gnulib.path)
 test -z "$gnulib_path" && gnulib_path=gnulib
 
 # Get gnulib files.
@@ -612,10 +646,10 @@ download_po_files() {
   subdir=$1
   domain=$2
   echo "$me: getting translations into $subdir for $domain..."
-  cmd=`printf "$po_download_command_format" "$domain" "$subdir"`
+  cmd=$(printf "$po_download_command_format" "$domain" "$subdir")
   eval "$cmd" && return
   # Fallback to HTTP.
-  cmd=`printf "$po_download_command_format2" "$subdir" "$domain"`
+  cmd=$(printf "$po_download_command_format2" "$subdir" "$domain")
   eval "$cmd"
 }
 
@@ -638,7 +672,7 @@ update_po_files() {
     && ls "$ref_po_dir"/*.po 2>/dev/null |
       sed 's|.*/||; s|\.po$||' > "$po_dir/LINGUAS" || return
 
-  langs=`cd $ref_po_dir && echo *.po|sed 's/\.po//g'`
+  langs=$(cd $ref_po_dir && echo *.po | sed 's/\.po//g')
   test "$langs" = '*' && langs=x
   for po in $langs; do
     case $po in x) continue;; esac
@@ -675,18 +709,18 @@ symlink_to_dir()
 
     # If the destination directory doesn't exist, create it.
     # This is required at least for "lib/uniwidth/cjk.h".
-    dst_dir=`dirname "$dst"`
+    dst_dir=$(dirname "$dst")
     if ! test -d "$dst_dir"; then
       mkdir -p "$dst_dir"
 
       # If we've just created a directory like lib/uniwidth,
       # tell version control system(s) it's ignorable.
       # FIXME: for now, this does only one level
-      parent=`dirname "$dst_dir"`
+      parent=$(dirname "$dst_dir")
       for dot_ig in x $vc_ignore; do
         test $dot_ig = x && continue
         ig=$parent/$dot_ig
-        insert_vc_ignore $ig `echo "$dst_dir"|sed 's,.*/,,'`
+        insert_vc_ignore $ig "${dst_dir##*/}"
       done
     fi
 
@@ -710,10 +744,10 @@ symlink_to_dir()
       # so that broken tools aren't confused into skipping needed builds.  See
       # <http://lists.gnu.org/archive/html/bug-gnulib/2011-05/msg00326.html>.
       test -h "$dst" &&
-      src_ls=`ls -diL "$src" 2>/dev/null` && set $src_ls && src_i=$1 &&
-      dst_ls=`ls -diL "$dst" 2>/dev/null` && set $dst_ls && dst_i=$1 &&
+      src_ls=$(ls -diL "$src" 2>/dev/null) && set $src_ls && src_i=$1 &&
+      dst_ls=$(ls -diL "$dst" 2>/dev/null) && set $dst_ls && dst_i=$1 &&
       test "$src_i" = "$dst_i" &&
-      both_ls=`ls -dt "$src" "$dst"` &&
+      both_ls=$(ls -dt "$src" "$dst") &&
       test "X$both_ls" = "X$dst$nl$src" || {
         dot_dots=
         case $src in
@@ -721,11 +755,10 @@ symlink_to_dir()
         *)
           case /$dst/ in
           *//* | */../* | */./* | /*/*/*/*/*/)
-             echo >&2 "$me: invalid symlink calculation: $src -> $dst"
-             exit 1;;
-          /*/*/*/*/)	dot_dots=../../../;;
-          /*/*/*/)	dot_dots=../../;;
-          /*/*/)	dot_dots=../;;
+             die "invalid symlink calculation: $src -> $dst";;
+          /*/*/*/*/)    dot_dots=../../../;;
+          /*/*/*/)      dot_dots=../../;;
+          /*/*/)        dot_dots=../;;
           esac;;
         esac
 
@@ -736,6 +769,22 @@ symlink_to_dir()
   }
 }
 
+version_controlled_file() {
+  parent=$1
+  file=$2
+  if test -d .git; then
+    git rm -n "$file" > /dev/null 2>&1
+  elif test -d .svn; then
+    svn log -r HEAD "$file" > /dev/null 2>&1
+  elif test -d CVS; then
+    grep -F "/${file##*/}/" "$parent/CVS/Entries" 2>/dev/null |
+             grep '^/[^/]*/[0-9]' > /dev/null
+  else
+    warn_ "no version control for $file?"
+    false
+  fi
+}
+
 # NOTE: we have to be careful to run both autopoint and libtoolize
 # before gnulib-tool, since gnulib-tool is likely to provide newer
 # versions of files "installed" by these two programs.
@@ -748,37 +797,54 @@ with_gettext=yes
 grep '^[	 ]*AM_GNU_GETTEXT_VERSION(' configure.ac >/dev/null || \
     with_gettext=no
 
-if test $with_gettext = yes; then
-  # Released autopoint has the tendency to install macros that have been
-  # obsoleted in current gnulib, so run this before gnulib-tool.
-  echo "$0: $AUTOPOINT --force"
-  $AUTOPOINT --force || exit
-fi
+if test $with_gettext = yes || test $use_libtool = 1; then
 
-# Autoreconf runs aclocal before libtoolize, which causes spurious
-# warnings if the initial aclocal is confused by the libtoolized
-# (or worse out-of-date) macro directory.
-if test $use_libtool = 1; then
-  echo "running: $LIBTOOLIZE --copy --install"
-  $LIBTOOLIZE --copy --install
-fi
+  tempbase=.bootstrap$$
+  trap "rm -f $tempbase.0 $tempbase.1" 1 2 13 15
 
-version_controlled_file() {
-  dir=$1
-  file=$2
-  found=no
-  if test -d CVS; then
-    grep -F "/$file/" $dir/CVS/Entries 2>/dev/null |
-             grep '^/[^/]*/[0-9]' > /dev/null && found=yes
-  elif test -d .git; then
-    git rm -n "$dir/$file" > /dev/null 2>&1 && found=yes
-  elif test -d .svn; then
-    svn log -r HEAD "$dir/$file" > /dev/null 2>&1 && found=yes
-  else
-    echo "$me: no version control for $dir/$file?" >&2
+  > $tempbase.0 > $tempbase.1 &&
+  find . ! -type d -print | sort > $tempbase.0 || exit
+
+  if test $with_gettext = yes; then
+    # Released autopoint has the tendency to install macros that have been
+    # obsoleted in current gnulib, so run this before gnulib-tool.
+    echo "$0: $AUTOPOINT --force"
+    $AUTOPOINT --force || exit
   fi
-  test $found = yes
-}
+
+  # Autoreconf runs aclocal before libtoolize, which causes spurious
+  # warnings if the initial aclocal is confused by the libtoolized
+  # (or worse out-of-date) macro directory.
+  # libtoolize 1.9b added the --install option; but we support back
+  # to libtoolize 1.5.22, where the install action was default.
+  if test $use_libtool = 1; then
+    install=
+    case $($LIBTOOLIZE --help) in
+      *--install*) install=--install ;;
+    esac
+    echo "running: $LIBTOOLIZE $install --copy"
+    $LIBTOOLIZE $install --copy
+  fi
+
+  find . ! -type d -print | sort >$tempbase.1
+  old_IFS=$IFS
+  IFS=$nl
+  for file in $(comm -13 $tempbase.0 $tempbase.1); do
+    IFS=$old_IFS
+    parent=${file%/*}
+    version_controlled_file "$parent" "$file" || {
+      for dot_ig in x $vc_ignore; do
+        test $dot_ig = x && continue
+        ig=$parent/$dot_ig
+        insert_vc_ignore "$ig" "${file##*/}"
+      done
+    }
+  done
+  IFS=$old_IFS
+
+  rm -f $tempbase.0 $tempbase.1
+  trap - 1 2 13 15
+fi
 
 # Import from gnulib.
 
@@ -804,11 +870,12 @@ echo "$0: $gnulib_tool $gnulib_tool_options --import ..."
 $gnulib_tool $gnulib_tool_options --import $gnulib_modules &&
 
 for file in $gnulib_files; do
-  symlink_to_dir "$GNULIB_SRCDIR" $file || exit
+  symlink_to_dir "$GNULIB_SRCDIR" $file \
+    || die "failed to symlink $file"
 done
 
 bootstrap_post_import_hook \
-  || { echo >&2 "$me: bootstrap_post_import_hook failed"; exit 1; }
+  || die "bootstrap_post_import_hook failed"
 
 # Remove any dangling symlink matching "*.m4" or "*.[ch]" in some
 # gnulib-populated directories.  Such .m4 files would cause aclocal to fail.
@@ -836,16 +903,17 @@ echo "running: AUTOPOINT=true LIBTOOLIZE=true " \
     "$AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS"
 AUTOPOINT=true LIBTOOLIZE=true \
     $AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS \
-  || exit 1
+  || die "autoreconf failed"
 
 # Get some extra files from gnulib, overriding existing files.
 for file in $gnulib_extra_files; do
   case $file in
   */INSTALL) dst=INSTALL;;
-  build-aux/*) dst=$build_aux/`expr "$file" : 'build-aux/\(.*\)'`;;
+  build-aux/*) dst=$build_aux/${file#build-aux/};;
   *) dst=$file;;
   esac
-  symlink_to_dir "$GNULIB_SRCDIR" $file $dst || exit
+  symlink_to_dir "$GNULIB_SRCDIR" $file $dst \
+    || die "failed to symlink $file"
 done
 
 if test $with_gettext = yes; then
@@ -861,7 +929,19 @@ if test $with_gettext = yes; then
       a\
           '"$XGETTEXT_OPTIONS"' $${end_of_xgettext_options+}
     }
-  ' po/Makevars.template >po/Makevars || exit 1
+  ' po/Makevars.template >po/Makevars \
+    || die 'cannot generate po/Makevars'
+
+  # If the 'gettext' module is in use, grab the latest Makefile.in.in.
+  # If only the 'gettext-h' module is in use, assume autopoint already
+  # put the correct version of this file into place.
+  case $gnulib_modules in
+  *gettext-h*) ;;
+  *gettext*)
+    cp $GNULIB_SRCDIR/build-aux/po/Makefile.in.in po/Makefile.in.in \
+      || die "cannot create po/Makefile.in.in"
+    ;;
+  esac
 
   if test -d runtime-po; then
     # Similarly for runtime-po/Makevars, but not quite the same.
@@ -875,7 +955,8 @@ if test $with_gettext = yes; then
         a\
             '"$XGETTEXT_OPTIONS_RUNTIME"' $${end_of_xgettext_options+}
       }
-    ' po/Makevars.template >runtime-po/Makevars || exit 1
+    ' po/Makevars.template >runtime-po/Makevars \
+    || die 'cannot generate runtime-po/Makevars'
 
     # Copy identical files from po to runtime-po.
     (cd po && cp -p Makefile.in.in *-quot *.header *.sed *.sin ../runtime-po)
diff --git a/gnulib b/gnulib
-Subproject 48056176f45bdbad1c95f8ce87d19ec8384bb62
+Subproject ee60576c422f09840dbb331fe06f571c114529e
diff --git a/m4/.gitignore b/m4/.gitignore
index b112934..339a5d7 100644
--- a/m4/.gitignore
+++ b/m4/.gitignore
@@ -245,3 +245,5 @@ xstrndup.m4
 xvasprintf.m4
 /close.m4
 /gl_list.m4
+/off_t.m4
+/sys_types_h.m4