maint: adjust quoting: emit '...', not `...' in diagnostics

* src/csplit.c (parse_repeat_count, extract_regexp): As above.
* src/date.c (main): Likewise.
* src/ls.c (decode_switches): Likewise.
* src/od.c (decode_one_format, main): Likewise.
* src/pathchk.c (no_leading_hyphen): Likewise.
* src/pr.c (main, getoptarg): Likewise.
* src/rm.c (diagnose_leading_hyphen): Likewise.
* src/sort.c (key_warnings, incompatible_options, main): Likewise.
* src/stat.c (print_esc_char): Print '\x', not `\x' in diagnostic.
* src/test.c (main): Likewise.
* src/touch.c (main): Likewise.
* src/tr.c (build_spec_list, validate, append_range): Likewise.
* tests/misc/mktemp: This is an unusual case, since the affected
string contains only the ` of an `...' string.  So we change
the long ` to a lone '.
* tests/pr/pr-tests: Manual quote adapting fix-up.
* tests/ln/hard-to-sym: Likewise.
* tests/split/suffix-length: Likewise.
* tests/mv/part-fail: Likewise.
* tests/misc/chcon: Likewise.
* tests/misc/stat-printf: Likewise.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/tr.c b/src/tr.c
index 5dc065cf8..7efb0e389 100644
--- a/src/tr.c
+++ b/src/tr.c
@@ -670,7 +670,7 @@ append_range (struct Spec_list *list, unsigned char first, unsigned char last)
       char *tmp2 = make_printable_char (last);
 
       error (0, 0,
-       _("range-endpoints of `%s-%s' are in reverse collating sequence order"),
+       _("range-endpoints of '%s-%s' are in reverse collating sequence order"),
              tmp1, tmp2);
       free (tmp1);
       free (tmp2);
@@ -907,10 +907,10 @@ build_spec_list (const struct E_string *es, struct Spec_list *result)
                   if (opnd_str_len == 0)
                     {
                       if (p[i + 1] == ':')
-                        error (0, 0, _("missing character class name `[::]'"));
+                        error (0, 0, _("missing character class name '[::]'"));
                       else
                         error (0, 0,
-                               _("missing equivalence class character `[==]'"));
+                               _("missing equivalence class character '[==]'"));
                       return false;
                     }
 
@@ -1503,7 +1503,7 @@ when translating"));
             {
               error (EXIT_FAILURE, 0,
                      _("when translating, the only character classes that may \
-appear in\nstring2 are `upper' and `lower'"));
+appear in\nstring2 are 'upper' and 'lower'"));
             }
 
           validate_case_classes (s1, s2);