tests: adjust \`...' quoting to '...' to adapt to latest gnulib

Run this:
  git grep -l "\\\\\`[^']*'" tests \
    |xargs perl -pi -e 's/\\\`(.*?'\'')/'\''$1/g

3 files changed, 3 insertions, 3 deletions

diff --git a/tests/cp/abuse b/tests/cp/abuse
index e569222bc..6338e1f57 100755
--- a/tests/cp/abuse
+++ b/tests/cp/abuse
@@ -23,7 +23,7 @@ mkdir a b c || framework_failure_
 ln -s ../t a/1 || framework_failure_
 echo payload > b/1 || framework_failure_
 
-echo "cp: will not copy \`b/1' through just-created symlink \`c/1'" \
+echo "cp: will not copy 'b/1' through just-created symlink 'c/1'" \
   > exp || framework_failure_
 
 # Check both cases: a dangling symlink, and one pointing to a writable file.
diff --git a/tests/cp/cp-i b/tests/cp/cp-i
index 030f652d7..746dc2765 100755
--- a/tests/cp/cp-i
+++ b/tests/cp/cp-i
@@ -28,7 +28,7 @@ echo n | cp -iR a b 2>/dev/null || fail=1
 
 # test miscellaneous combinations of -f -i -n parameters
 touch c d || framework_failure_
-echo "\`c' -> \`d'" > out_copy
+echo "'c' -> 'd'" > out_copy
 > out_empty
 
 # ask for overwrite, answer no
diff --git a/tests/cp/thru-dangling b/tests/cp/thru-dangling
index 4d17ec3be..f8527af8d 100755
--- a/tests/cp/thru-dangling
+++ b/tests/cp/thru-dangling
@@ -22,7 +22,7 @@ print_ver_ cp
 ln -s no-such dangle || framework_failure_
 echo hi > f || framework_failure_
 echo hi > exp || framework_failure_
-echo "cp: not writing through dangling symlink \`dangle'" \
+echo "cp: not writing through dangling symlink 'dangle'" \
     > exp-err || framework_failure_