t7800-difftool: Set a bogus tool for use by tests

diff --git a/t/lib-git-svn.sh b/t/lib-git-svn.sh
index fd8631f90686bb4dfe6d39290434136fc4741068..0f7f35ccc9e1315d3ac8e5d37df51c106847d920 100644 (file)
--- a/t/lib-git-svn.sh
+++ b/t/lib-git-svn.sh
@@ -16,6 +16,7 @@ fi
 GIT_DIR=$PWD/.git
 GIT_SVN_DIR=$GIT_DIR/svn/refs/remotes/git-svn
 SVN_TREE=$GIT_SVN_DIR/svn-tree
+PERL=${PERL:-perl}
 
 svn >/dev/null 2>&1
 if test $? -ne 1
@@ -29,7 +30,7 @@ export svnrepo
 svnconf=$PWD/svnconf
 export svnconf
 
-perl -w -e "
+$PERL -w -e "
 use SVN::Core;
 use SVN::Repos;
 \$SVN::Core::VERSION gt '1.1.0' or exit(42);
@@ -130,7 +131,7 @@ stop_httpd () {
 }
 
 convert_to_rev_db () {
-       perl -w -- - "$@" <<\EOF
+       $PERL -w -- - "$@" <<\EOF
 use strict;
 @ARGV == 2 or die "Usage: convert_to_rev_db <input> <output>";
 open my $wr, '+>', $ARGV[1] or die "$!: couldn't open: $ARGV[1]";