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'

2 files changed, 5 insertions, 5 deletions

diff --git a/tests/chmod/no-x b/tests/chmod/no-x
index 3a68eeaa9..cc0d14268 100755
--- a/tests/chmod/no-x
+++ b/tests/chmod/no-x
@@ -32,9 +32,9 @@ prog=chmod
 # NOTE: this code is the same for all tests/*/no-x tests.
 # Depending on whether fts is using native fdopendir, we see one
 # of the following diagnostics (note also the /y suffix in one case):
-#   prog: `d/no-x': Permission denied
-#   prog: cannot access `d/no-x/y': Permission denied
-#   prog: cannot read directory `d/no-x': Permission denied
+#   prog: 'd/no-x': Permission denied
+#   prog: cannot access 'd/no-x/y': Permission denied
+#   prog: cannot read directory 'd/no-x': Permission denied
 # Convert either of the latter two to the first one.
 sed "s/^$prog: cannot access /$prog: /" out > t && mv t out
 sed "s/^$prog: cannot read directory /$prog: /" out > t && mv t out
@@ -47,7 +47,7 @@ EOF
 compare exp out || fail=1
 
 cd a
-# This will fail with ``chmod: fts_read failed: Permission denied''
+# This will fail with '`chmod: fts_read failed: Permission denied''
 chmod a-x . b 2> /dev/null && fail=1
 # chmod must exit with status 1.
 # Due to a bug in coreutils-5.93's fts.c, chmod would provoke
diff --git a/tests/chmod/octal b/tests/chmod/octal
index 3e6c02a61..845116b26 100755
--- a/tests/chmod/octal
+++ b/tests/chmod/octal
@@ -21,7 +21,7 @@ print_ver_ chmod
 
 
 # Before coreutils-5.92, this would mistakenly succeed,
-# and act like `chmod 0 .'.
+# and act like 'chmod 0 .'.
 chmod 0-followed-by-anything . 2> /dev/null && fail=1
 chmod 7-followed-by-anything . 2> /dev/null && fail=1
 chmod 8                      . 2> /dev/null && fail=1