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'

4 files changed, 7 insertions, 7 deletions

diff --git a/tests/chgrp/basic b/tests/chgrp/basic
index 4279d65a2..0cf0bca84 100755
--- a/tests/chgrp/basic
+++ b/tests/chgrp/basic
@@ -66,7 +66,7 @@ chown --from=:$g1 :$g2 f; test `stat --printf=%g f` = $g2 || fail=1
 
 # This *should* change the group of f.
 # Though note that the diagnostic is misleading in that
-# it says the `group of `symlink'' has been changed.
+# it says the 'group of `symlink'' has been changed.
 chgrp $g1 symlink; test `stat --printf=%g f` = $g1 || fail=1
 chown --from=:$g1 :$g2 f; test `stat --printf=%g f` = $g2 || fail=1
 
diff --git a/tests/chgrp/deref b/tests/chgrp/deref
index ab5db8d74..cf1ddd869 100755
--- a/tests/chgrp/deref
+++ b/tests/chgrp/deref
@@ -52,7 +52,7 @@ set _ `ls -ln f`; g=$5; test "$g" = $g2 || fail=1
 
 # This *should* change the group of f.
 # Though note that the diagnostic you'd get with -c is misleading in that
-# it says the `group of `symlink'' has been changed.
+# it says the 'group of `symlink'' has been changed.
 chgrp --dereference $g1 symlink
 set _ `ls -ln f`; g=$5; test "$g" = $g1 || fail=1
 set _ `ls -ln symlink`; g=$5; test "$g" = $g2 || fail=1
diff --git a/tests/chgrp/no-x b/tests/chgrp/no-x
index 200fa3221..c6688c623 100755
--- a/tests/chgrp/no-x
+++ b/tests/chgrp/no-x
@@ -37,9 +37,9 @@ prog=chgrp
 # NOTE: this code is the same for all tests/*/no-x tests.
 # Depending on whether fts is using native fdopendir, we see one
 # of the following diagnostics (note also the /y suffix in one case):
-#   prog: `d/no-x': Permission denied
-#   prog: cannot access `d/no-x/y': Permission denied
-#   prog: cannot read directory `d/no-x': Permission denied
+#   prog: 'd/no-x': Permission denied
+#   prog: cannot access 'd/no-x/y': Permission denied
+#   prog: cannot read directory 'd/no-x': Permission denied
 # Convert either of the latter two to the first one.
 sed "s/^$prog: cannot access /$prog: /" out > t && mv t out
 sed "s/^$prog: cannot read directory /$prog: /" out > t && mv t out
diff --git a/tests/chgrp/posix-H b/tests/chgrp/posix-H
index b2723b68a..a6474f562 100755
--- a/tests/chgrp/posix-H
+++ b/tests/chgrp/posix-H
@@ -43,7 +43,7 @@ changed='
 3
 '
 for i in $changed; do
-  # Filter out symlinks (entries that end in `s'), since it's not
+  # Filter out symlinks (entries that end in 's'), since it's not
   # possible to change their group/owner information on some systems.
   case $i in *s) continue;; esac
   set _ `ls -dgn $i`; shift
@@ -59,7 +59,7 @@ not_changed='
 3/3F
 '
 for i in $not_changed; do
-  # Filter out symlinks (entries that end in `s'), since it's not
+  # Filter out symlinks (entries that end in 's'), since it's not
   # possible to change their group/owner information on some systems.
   case $i in *s) continue;; esac
   set _ `ls -dgn $i`; shift