tests: avoid one last `...` command substitution in 'test-init.sh'

* t/ax/test-init.sh (me): In the definition of this variable.  This
also shave off a couple of forks, and the need for a sanity check
only required in fringe situations.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

diff --git a/t/ax/test-init.sh b/t/ax/test-init.sh
index ca606b5..116d4b1 100644 (file)
--- a/t/ax/test-init.sh
+++ b/t/ax/test-init.sh
@@ -26,10 +26,13 @@ set -e
 # Test scripts can override it if they need to (but this should
 # be done carefully).
 if test -z "$me"; then
-  # Guard against failure to spawn sed (seen on MSYS), or empty $argv0.
-  me=`echo "$argv0" | sed -e 's,.*[\\/],,;s/\.sh$//;s/\.tap$//'` \
-    && test -n "$me" \
-    || { echo "$argv0: failed to define \$me" >&2; exit 99; }
+  # Strip all directory components.
+  me=${argv0##*/}
+  # Strip test suffix.
+  case $me in
+    *.tap) me=${me%.tap};;
+     *.sh) me=${me%.sh} ;;
+  esac
 fi