tests: change `...' to '...' on lines not matching /[=\$]/

Exempt lines with '$' or '=', since those are prone to improper
conversion.  Run this:
  git grep -l "\`[^']*'" tests \
   |xargs perl -pi -e '/[=\$]/ and next;s/\`([^'\''"]*?'\'')/'\''$1/g'

1 files changed, 5 insertions, 5 deletions

diff --git a/tests/rm/rm5 b/tests/rm/rm5
index 947533433..2201ec469 100755
--- a/tests/rm/rm5
+++ b/tests/rm/rm5
@@ -28,16 +28,16 @@ y
 EOF
 
 cat <<\EOF > exp || framework_failure_
-rm: descend into directory `d'
-rm: remove directory `d/e'
-rm: remove directory `d'
+rm: descend into directory 'd'
+rm: remove directory 'd/e'
+rm: remove directory 'd'
 EOF
 
 
 rm -ir d < in > out 2>&1 || fail=1
 
-# Given input like `rm: ...? rm: ...? ' (no trailing newline),
-# the `head...' part of the pipeline below removes the trailing space, so
+# Given input like 'rm: ...? rm: ...? ' (no trailing newline),
+# the 'head...' part of the pipeline below removes the trailing space, so
 # that sed doesn't have to deal with a line lacking a terminating newline.
 # This avoids a bug whereby some vendor-provided (Tru64) versions of sed
 # would mistakenly tack a newline onto the end of the output.