filter-branch: a few more touch ups to the man page

diff --git a/t/test-lib.sh b/t/test-lib.sh
old mode 100755 (executable)
new mode 100644 (file)
index a403fe0..78d7e87
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -16,6 +16,7 @@ unset AUTHOR_EMAIL
 unset AUTHOR_NAME
 unset COMMIT_AUTHOR_EMAIL
 unset COMMIT_AUTHOR_NAME
+unset EMAIL
 unset GIT_ALTERNATE_OBJECT_DIRECTORIES
 unset GIT_AUTHOR_DATE
 GIT_AUTHOR_EMAIL=author@example.com
@@ -25,6 +26,7 @@ GIT_COMMITTER_EMAIL=committer@example.com
 GIT_COMMITTER_NAME='C O Mitter'
 unset GIT_DIFF_OPTS
 unset GIT_DIR
+unset GIT_WORK_TREE
 unset GIT_EXTERNAL_DIFF
 unset GIT_INDEX_FILE
 unset GIT_OBJECT_DIRECTORY
@@ -36,6 +38,10 @@ export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 export EDITOR VISUAL
 
+# Protect ourselves from common misconfiguration to export
+# CDPATH into the environment
+unset CDPATH
+
 case $(echo $GIT_TRACE |tr "[A-Z]" "[a-z]") in
        1|2|true)
                echo "* warning: Some tests will not work if GIT_TRACE" \
@@ -227,7 +233,7 @@ test_create_repo () {
        mv .git/hooks .git/hooks-disabled
        cd "$owd"
 }
-       
+
 test_done () {
        trap - exit
        case "$test_failure" in
@@ -264,6 +270,12 @@ test -d ../templates/blt || {
        error "You haven't built things yet, have you?"
 }
 
+if ! test -x ../test-chmtime; then
+       echo >&2 'You need to build test-chmtime:'
+       echo >&2 'Run "make test-chmtime" in the source (toplevel) directory'
+       exit 1
+fi
+
 # Test repository
 test=trash
 rm -fr "$test"