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-rwxr-xr-xtest/pad-crop-roundtrip.test12
1 files changed, 8 insertions, 4 deletions
diff --git a/test/pad-crop-roundtrip.test b/test/pad-crop-roundtrip.test
index 2b3c777b..ae19f7d5 100755
--- a/test/pad-crop-roundtrip.test
+++ b/test/pad-crop-roundtrip.test
@@ -2,7 +2,11 @@
 # This script tests: pnmcrop pnmmargin
 # Also requires: pnmpad
 
-${PBM_TESTPREFIX}pnmmargin -white 10 testimg.ppm | \
-  ${PBM_TESTPREFIX}pnmcrop | cksum
-${PBM_TESTPREFIX}pnmmargin -white 10 testgrid.pbm | \
-  ${PBM_TESTPREFIX}pnmcrop | cksum
+  alias pnmcrop="${PBM_TESTPREFIX}pnmcrop"
+  alias pnmmargin="${PBM_TESTPREFIX}pnmmargin"
+  shopt -s expand_aliases
+
+pnmmargin -white 10 testimg.ppm | \
+  pnmcrop | cksum
+pnmmargin -white 10 testgrid.pbm | \
+  pnmcrop | cksum