# HG changeset patch
# User Jim Meyering <meyering@redhat.com>
# Date 1260301070 -3600
# Node ID 44954971957b7fbbd5bb9d420cd2ca77835a97f3
# Parent  085e83b725e111800ad67e55412b97e9d60bfde0
init.sh: avoid Solaris 10 /bin/sh portability problem

Solaris 10's /bin/sh does not pass '.' arguments 2..N to the
sourced script:
  $ printf 'echo "$@"\n' > f; /bin/sh -c '. ./f bar'
  $ printf 'echo "$@"\n' > f;    bash -c '. ./f bar'
  bar
tests/init.sh relied on that, accepting a --set-path=DIR argument,
and two tests used that idiom.
* tests/init.sh: Update suggested usage comments.
(path_prepend_): New function, to be used in place of
the --src-path=DIR option.
Disallow empty strings and strings containing ":".
(setup_): Move PATH-prepending code into path_prepend_.
* tests/test-pread.sh: Adapt to new usage.
* tests/test-xalloc-die.sh: Likewise.

diff --git a/ChangeLog b/ChangeLog
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,20 @@
+2009-12-08  Jim Meyering  <meyering@redhat.com>
+
+	init.sh: avoid Solaris 10 /bin/sh portability problem
+	Solaris 10's /bin/sh does not pass '.' arguments 2.. to the
+	sourced script:
+	  $ printf 'echo "$@"\n' > f; /bin/sh -c '. ./f bar'
+	  $ printf 'echo "$@"\n' > f; /bin/bash -c '. ./f bar'
+	  bar
+	tests/init.sh relied on that, accepting a --set-path=DIR argument,
+	and two tests used that idiom.
+	* tests/init.sh: Update suggested usage comments.
+	(path_prepend_): New function, to be used in place
+	of the --src-path=DIR option.
+	(setup_): Move PATH-prepending code into path_prepend_.
+	* tests/test-pread.sh: Adapt to new usage.
+	* tests/test-xalloc-die.sh: Likewise.
+
 2009-12-08  Simon Josefsson  <simon@josefsson.org>
 
 	* doc/gnulib.texi (Glibc pty.h): Add.
diff --git a/tests/init.sh b/tests/init.sh
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -22,7 +22,7 @@
 #
 #   #!/bin/sh
 #   : ${srcdir=.}
-#   . "$srcdir/init.sh" --set-path=.
+#   . "$srcdir/init.sh"; path_prepend_ .
 #   Execute some commands.
 #   Note that these commands are executed in a subdirectory, therefore you
 #   need to prepend "../" to relative filenames in the build directory.
@@ -47,7 +47,7 @@
 #      Makefile:
 #   $ export srcdir=../../tests # this is an example
 #   3. Execute the commands from the test, copy&pasting them one by one:
-#   $ . "$srcdir/init.sh" --set-path=.
+#   $ . "$srcdir/init.sh"; path_prepend_ .
 #   ...
 #   4. Finally
 #   $ exit
@@ -92,29 +92,31 @@
   exit $__st
 }
 
+# Use this function to prepend to PATH an absolute name for each
+# specified, possibly-$initial_cwd_relative, directory.
+path_prepend_()
+{
+  while test $# != 0; do
+    path_dir_=$1
+    case $path_dir_ in
+      '') fail_ "invalid path dir: '$1'";;
+      /*) abs_path_dir_=$path_dir_;;
+      *) abs_path_dir_=`cd "$initial_cwd_/$path_dir_" && echo "$PWD"` \
+           || fail_ "invalid path dir: $path_dir_";;
+    esac
+    case $abs_path_dir_ in
+      *:*) fail_ "invalid path dir: '$abs_path_dir_'";;
+    esac
+    PATH="$abs_path_dir_:$PATH"
+    shift
+  done
+  export PATH
+}
+
 setup_()
 {
   test "$VERBOSE" = yes && set -x
 
-  # Honor one or more --set-path=. options (i.e., or --set-path=../src).
-  # Use this option to prepend to PATH an absolute name for the
-  # specified, possibly-relative, directory.
-  while test $# != 0; do
-    case $1 in
-      --set-path=*)
-        path_dir_=${1#--set-path=}
-        test -z "$path_dir_" && fail_ "missing argument to --set-path="
-        abs_path_dir_=`cd "$path_dir_" && echo "$PWD" || exit 1` \
-            || fail_ "invalid path dir: $path_dir"
-        PATH="$abs_path_dir_:$PATH"
-        export PATH
-        shift
-        ;;
-      *) fail_ "unrecognized option: $1"
-        ;;
-    esac
-  done
-
   initial_cwd_=$PWD
   ME_=`expr "./$0" : '.*/\(.*\)$'`
 
diff --git a/tests/test-pread.sh b/tests/test-pread.sh
--- a/tests/test-pread.sh
+++ b/tests/test-pread.sh
@@ -1,6 +1,5 @@
 #!/bin/sh
-: ${srcdir=.}
-. "$srcdir/init.sh" --set-path=.
+. "${srcdir=.}/init.sh"; path_prepend_ .
 
 fail=0
 : | test-pread || fail=1
diff --git a/tests/test-xalloc-die.sh b/tests/test-xalloc-die.sh
--- a/tests/test-xalloc-die.sh
+++ b/tests/test-xalloc-die.sh
@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${srcdir=.}/init.sh" --set-path=.
+. "${srcdir=.}/init.sh"; path_prepend_ .
 
 test-xalloc-die 2> err > out
 case $? in