use ' {8}' instead of 8 literal spaces

diff --git a/util/update_copyrights b/util/update_copyrights
index 79cf8b74de38ed47f637d6dd8805a1e2ee8907f6..75dcdec4be7fdacacdcadab4601a9d8adf13c7a5 100644 (file)
--- a/util/update_copyrights
+++ b/util/update_copyrights
@@ -507,7 +507,7 @@ foreach $file (keys %file_types) {
                        s/^(\t*) {1,7}\t/$1\t/ while (/^\t* {1,7}\t/);
                        # Convert 8 spaces into tabs if at start of line
                        # or preceeded by tabs.
-                       s/^(\t*)        /$1\t/ while (/^\t*        /);
+                       s/^(\t*) {8}/$1\t/ while (/^\t* {8}/);
                        # Remove trailing white space.
                        s/[ \t]*$//;
                                $body = "$body$_";