t/t9001-send-email.sh: Remove needless PROG=* assignment

diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 8e3694ed5b80a87602d6533f0aa28307bd7b3d1b..dae635851666a7f5ccf685b89d64f31d5dbdd2fd 100755 (executable)
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -204,6 +204,9 @@ log --root --patch-with-stat --summary master
 log --root -c --patch-with-stat --summary master
 # improved by Timo's patch
 log --root --cc --patch-with-stat --summary master
+log -p --first-parent master
+log -m -p --first-parent master
+log -m -p master
 log -SF master
 log -SF -p master
 log --decorate --all
@@ -235,6 +238,9 @@ show initial
 show --root initial
 show side
 show master
+show -c master
+show -m master
+show --first-parent master
 show --stat side
 show --stat --summary side
 show --patch-with-stat side