utimens: cache whether utimensat syscall works

[pspp] / lib / quotearg.c

diff --git a/lib/quotearg.c b/lib/quotearg.c
index 314c627beb667afd3442767dede03e21a90c65be..8380e9de6c038e604e50440d5ac49415a94c7aa2 100644 (file)
--- a/lib/quotearg.c
+++ b/lib/quotearg.c
@@ -336,6 +336,10 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
                  STORE ('0');
                }
              c = '0';
+             /* We don't have to worry that this last '0' will be
+                backslash-escaped because, again, quote_string should
+                not start with it and because quote_these_too is
+                documented as not accepting it.  */
            }
          else if (flags & QA_ELIDE_NULL_BYTES)
            continue;
@@ -461,7 +465,9 @@ quotearg_buffer_restyled (char *buffer, size_t buffersize,
             escape by prepending a backslash.  However, it's hard to
             imagine any locale that would use digits or letters as
             quotes, and set_custom_quoting is documented not to accept
-            them.  */
+            them.  Also, a digit or a special letter would cause
+            trouble if it appeared in quote_these_too, but that's also
+            documented as not accepting them.  */
          break;
 
        default: