examples: avoid "unbound variable" errors

When the shell option `nounset` is set, we may get "unbound variable" errors. https://lists.gnu.org/r/bug-bison/2020-11/msg00013.html * examples/test (diff_opts): Be sure to initialize it.
akimd · Nov 20, 2020 · 2ca158c · 2ca158c
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commit 2ca158c
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/examples/test b/examples/test
@@ -37,6 +37,7 @@ strip_prompt=false
 # If diff supports --strip-trailing-cr, use it, to avoid EOL issues
 # when testing Java programs on Windows.
 echo "checking for diff --strip-trailing-cr..."
+diff_opts=
 if diff --strip-trailing-cr "$1" "$1"; then
   diff_opts=--strip-trailing-cr
 fi