mark executable, quote wdir defensively

Author: jwm

autogen.sh

@@ -1,11 +1,11 @@
 #!/bin/bash
 autoreconf --install
 
-wdir=$(dirname $(readlink -m $0))
+wdir=$(dirname $(readlink -m "$0"))
 # if git prepare commit hook is a file, rename it to .orig
 # and replace it with a link to the project hook
-if [ -f $wdir/.git/hooks/prepare-commit-msg ]; then
+if [ -f "$wdir/.git/hooks/prepare-commit-msg" ]; then
     echo "installing git prepare-commit hook"
-    mv -f $wdir/.git/hooks/prepare-commit-msg $wdir/.git/hooks/prepare-commit-msg.save || exit 1
-    ln -s '../../scripts/git_prepare_hook' $wdir/.git/hooks/prepare-commit-msg || exit 1
+    mv -f "$wdir/.git/hooks/prepare-commit-msg" "$wdir/.git/hooks/prepare-commit-msg.save" || exit 1
+    ln -s '../../scripts/git_prepare_hook' "$wdir/.git/hooks/prepare-commit-msg" || exit 1
 fi