tests: be robust to POSIXLY_CORRECT being defined.

[bison.git] / tests / bison.in

diff --git a/tests/bison.in b/tests/bison.in
index 5d609bf50e42f715da8f9772661bf102d50856b6..651178d316053b865f5fc8a93d9f2e8bb6bf0f8f 100644 (file)
--- a/tests/bison.in
+++ b/tests/bison.in
@@ -23,25 +23,25 @@ abs_top_builddir='@abs_top_builddir@'
 # Use the shipped files, not those installed.
 BISON_PKGDATADIR=$abs_top_srcdir/data
 export BISON_PKGDATADIR
+
 $PREBISON "$abs_top_builddir/src/bison" ${1+"$@"}
 status=$?
 
 # As a special dark magic, if we are actually using this wrapper to
 # compile Bison's src/parse-gram.y, post-process the synclines to
 # avoid dependencies on the user's set up (srcdir vs. builddir).
-PERL=perl
-
 for i
 do
   case $i in
     */src/parse-gram.y)
+    : ${PERL=perl}
     if $PERL --version >/dev/null; then
       # We are called by ylwrap which still uses y.tab.*, and
       # post-processes the synclines on y.tab.c itself.  Don't let it
       # do it.  Besides, it leaves "parse-gram.y" as the source,
       # dropping the src/ part.
-      perl -pi -e 's{"y\.tab\.}{"src/parse-gram.}g;'  \
-               -e 's{".*/(parse-gram\.y)"}{"src/$1"}g;'   \
+      $PERL -pi -e 's{"y\.tab\.}{"src/parse-gram.}g;'    \
+                -e 's{".*/(parse-gram\.y)"}{"src/$1"}g;' \
            y.tab.[ch]
     fi
     ;;