interpret-trailers: add an option to show only existing trailers

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index bd357704cce987afa79ec8fce038aa05f8c0a762..50a9a1d1c49e719d0ee65435b05171747e065259 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -136,17 +136,12 @@ test_tick () {
        export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
 }
 
-# Stop execution and start a shell. This is useful for debugging tests and
-# only makes sense together with "-v".
+# Stop execution and start a shell. This is useful for debugging tests.
 #
 # Be sure to remove all invocations of this command before submitting.
 
 test_pause () {
-       if test "$verbose" = t; then
-               "$SHELL_PATH" <&6 >&3 2>&4
-       else
-               error >&5 "test_pause requires --verbose"
-       fi
+       "$SHELL_PATH" <&6 >&5 2>&7
 }
 
 # Wrap git in gdb. Adding this to a command can make it easier to
@@ -154,7 +149,7 @@ test_pause () {
 #
 # Example: "debug git checkout master".
 debug () {
-        GIT_TEST_GDB=1 "$@"
+        GIT_TEST_GDB=1 "$@" <&6 >&5 2>&7
 }
 
 # Call test_commit with the arguments
@@ -221,6 +216,11 @@ test_chmod () {
        git update-index --add "--chmod=$@"
 }
 
+# Get the modebits from a file.
+test_modebits () {
+       ls -l "$1" | sed -e 's|^\(..........\).*|\1|'
+}
+
 # Unset a configuration variable, but don't fail if it doesn't exist.
 test_unconfig () {
        config_dir=
@@ -999,6 +999,7 @@ test_copy_bytes () {
                        my $s;
                        my $nread = sysread(STDIN, $s, $len);
                        die "cannot read: $!" unless defined($nread);
+                       last unless $nread;
                        print $s;
                        $len -= $nread;
                }