maint: use $var notation rather than ${var} when possible

I noticed some uses of ${srcdir} in shell scripts.
That is almost always better written as $srcdir.
The patch below converts most such variable references.
Here are the few remaining candidates:

$ git grep -i -E '\$\{[a-zA-Z_0-9]+\}'|grep -v Makefile.in.in
configure.ac:        JAR_INSTALL_DIR=\${prefix}/share/java
configure.ac:        JNI_INSTALL_DIR=\${libdir}
debian/rules:   for TEST in ${DEBIAN_SKIP_TEST}; do \
debian/rules:#          mv $${mod} $$(dirname $${mod})/libguestfsmod.so; \
java/Makefile.am:libguestfs_jar_DATA = libguestfs-${VERSION}.jar
java/Makefile.am:libguestfs-${VERSION}.jar: $(libguestfs_jar_class_files)
perl/lib/Sys/Guestfs/Lib.pm:                      "-f", '${Package} ${Version} ${Architecture} ${Status}\n',
perl/typemap:            croak (\"${Package}::$func_name(): called on a closed handle\");
perl/typemap:        croak (\"${Package}::$func_name(): $var is not a blessed HV reference\");
tests/data/Makefile.am:   echo "$${i}abcdefghijklmnopqrstuvwxyz"; \

We could change all of those, too, except the ones in configure.ac
and Makefile.am, since they refer to Make variables.  Even those
should be changed, but to use the preferred Makefile notation:
$(prefix), $(libdir), $(VERSION).

>From a86770ecd45666232a94d76c8725c8f9b1c76e3a Mon Sep 17 00:00:00 2001
From: Jim Meyering <meyering@redhat.com>
Date: Mon, 23 Jan 2012 11:15:12 +0100
Subject: [PATCH libguestfs] maint: use $var notation rather than ${var} when
 possible

The only case to avoid in a shell script is when the byte after the
"}" is word-constituent, and concatenating it would thus change the
name of the variable.

These changes were induced by running this command:
  git grep -l -i -E '\$\{(srcdir|md)' \
    |xargs perl -pi -e 's/\$\{(srcdir|md)\}($|\w)/\$$1$2/gi'

The "g" was needed because there was one line with two instances.
The "i" is to handle ${SRCDIR}.  The ($|\w) ensures that concatenating
whatever follows the "}" won't change semantics.

* gobject/run-bindtests: Use "$srcdir", not "${srcdir}".
* haskell/run-bindtests: Likewise.
* java/run-bindtests: Likewise.
* ocaml/run-bindtests: Likewise.
* perl/run-bindtests: Likewise.
* python/run-bindtests: Likewise.
* ruby/run-bindtests: Likewise.
* tests/guests/guest-aux/make-debian-img.sh: Likewise, but $SRCDIR.
* tests/guests/guest-aux/make-ubuntu-img.sh: Likewise.
* tests/guests/guest-aux/make-windows-img.sh: Likewise.
* tests/md/test-mdadm.sh: Likewise, but $md.

10 files changed, 17 insertions, 17 deletions

diff --git a/haskell/run-bindtests b/haskell/run-bindtests
index 3b174035..170b6d02 100755
--- a/haskell/run-bindtests
+++ b/haskell/run-bindtests
@@ -19,4 +19,4 @@
 set -e
 
 ./Bindtests > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/java/run-bindtests b/java/run-bindtests
index 4fc147a7..9557c9d0 100755
--- a/java/run-bindtests
+++ b/java/run-bindtests
@@ -19,4 +19,4 @@
 set -e
 
 $JAVA -Djava.library.path=.libs Bindtests > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/ocaml/run-bindtests b/ocaml/run-bindtests
index af6fc14a..da10231d 100755
--- a/ocaml/run-bindtests
+++ b/ocaml/run-bindtests
@@ -19,4 +19,4 @@
 set -e
 
 ./bindtests > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/perl/run-bindtests b/perl/run-bindtests
index 5a53ab63..e4621e32 100755
--- a/perl/run-bindtests
+++ b/perl/run-bindtests
@@ -20,4 +20,4 @@ set -e
 
 export PERL5LIB=$(pwd)/blib/lib:$(pwd)/blib/arch
 perl bindtests.pl > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/python/run-bindtests b/python/run-bindtests
index 0299ff1b..1a8ba766 100755
--- a/python/run-bindtests
+++ b/python/run-bindtests
@@ -18,5 +18,5 @@
 
 set -e
 
-$PYTHON ${srcdir}/bindtests.py > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+$PYTHON $srcdir/bindtests.py > bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/ruby/run-bindtests b/ruby/run-bindtests
index aafcfbae..e9fdc31d 100755
--- a/ruby/run-bindtests
+++ b/ruby/run-bindtests
@@ -18,5 +18,5 @@
 
 set -e
 
-$RUBY -I${srcdir}/lib -Iext/guestfs ${srcdir}/bindtests.rb > bindtests.tmp
-diff -u ${srcdir}/../bindtests bindtests.tmp
+$RUBY -I$srcdir/lib -Iext/guestfs $srcdir/bindtests.rb > bindtests.tmp
+diff -u $srcdir/../bindtests bindtests.tmp
diff --git a/tests/guests/guest-aux/make-debian-img.sh b/tests/guests/guest-aux/make-debian-img.sh
index b936f817..9449d0f2 100755
--- a/tests/guests/guest-aux/make-debian-img.sh
+++ b/tests/guests/guest-aux/make-debian-img.sh
@@ -80,9 +80,9 @@ upload fstab.tmp /etc/fstab
 write /etc/debian_version "5.0.1"
 write /etc/hostname "debian.invalid"
 
-upload ${SRCDIR}/guest-aux/debian-packages /var/lib/dpkg/status
+upload $SRCDIR/guest-aux/debian-packages /var/lib/dpkg/status
 
-upload ${SRCDIR}/../data/bin-x86_64-dynamic /bin/ls
+upload $SRCDIR/../data/bin-x86_64-dynamic /bin/ls
 
 mkdir /boot/grub
 touch /boot/grub/grub.conf
diff --git a/tests/guests/guest-aux/make-ubuntu-img.sh b/tests/guests/guest-aux/make-ubuntu-img.sh
index e55c7908..c2831aaa 100755
--- a/tests/guests/guest-aux/make-ubuntu-img.sh
+++ b/tests/guests/guest-aux/make-ubuntu-img.sh
@@ -69,9 +69,9 @@ write /etc/debian_version "5.0.1"
 upload release.tmp /etc/lsb-release
 write /etc/hostname "ubuntu.invalid"
 
-upload ${SRCDIR}/guest-aux/debian-packages /var/lib/dpkg/status
+upload $SRCDIR/guest-aux/debian-packages /var/lib/dpkg/status
 
-upload ${SRCDIR}/../data/bin-x86_64-dynamic /bin/ls
+upload $SRCDIR/../data/bin-x86_64-dynamic /bin/ls
 
 mkdir /boot/grub
 touch /boot/grub/grub.conf
diff --git a/tests/guests/guest-aux/make-windows-img.sh b/tests/guests/guest-aux/make-windows-img.sh
index 47b8abb1..ed949981 100755
--- a/tests/guests/guest-aux/make-windows-img.sh
+++ b/tests/guests/guest-aux/make-windows-img.sh
@@ -58,10 +58,10 @@ mkfs ntfs /dev/sda2
 mount-options "" /dev/sda2 /
 mkdir-p /Windows/System32/Config
 
-upload ${SRCDIR}/guest-aux/windows-software /Windows/System32/Config/SOFTWARE
-upload ${SRCDIR}/guest-aux/windows-system /Windows/System32/Config/SYSTEM
+upload $SRCDIR/guest-aux/windows-software /Windows/System32/Config/SOFTWARE
+upload $SRCDIR/guest-aux/windows-system /Windows/System32/Config/SYSTEM
 
-upload ${SRCDIR}/../data/bin-win32.exe /Windows/System32/cmd.exe
+upload $SRCDIR/../data/bin-win32.exe /Windows/System32/cmd.exe
 
 mkdir "/Program Files"
 touch /autoexec.bat
diff --git a/tests/md/test-mdadm.sh b/tests/md/test-mdadm.sh
index e7f5775a..620dcfd9 100755
--- a/tests/md/test-mdadm.sh
+++ b/tests/md/test-mdadm.sh
@@ -100,7 +100,7 @@ eval `../../fish/guestfish --listen`
 ../../fish/guestfish --remote run
 
 for md in `../../fish/guestfish --remote list-md-devices`; do
-  ../../fish/guestfish --remote md-detail "${md}" > md-detail.out
+  ../../fish/guestfish --remote md-detail "$md" > md-detail.out
 
   sed 's/:\s*/=/' md-detail.out > md-detail.out.sh
   . md-detail.out.sh
@@ -158,7 +158,7 @@ eval `../../fish/guestfish --listen`
 ../../fish/guestfish --remote run
 
 for md in `../../fish/guestfish --remote list-md-devices`; do
-  ../../fish/guestfish --remote md-stop "${md}"
+  ../../fish/guestfish --remote md-stop "$md"
 done
 
 ../../fish/guestfish --remote exit