Change bless to clean up absolute paths

User-specific absolute paths should be avoided in tests, since they
aren't portable. Change bless to detect common places where this occurs
and make it use %s in EXPECTF if so.

This was originally developed as part of GH-12276. While the approved
RFC doesn't enable function parameters to be printed for tests, the
functionality is generally useful.

Author: NattyNarwhal

scripts/dev/bless_tests.php

@@ -74,6 +74,10 @@ function normalizeOutput(string $out): string {
         'Resource ID#%d used as offset, casting to integer (%d)',
         $out);
     $out = preg_replace('/string\(\d+\) "([^"]*%d)/', 'string(%d) "$1', $out);
+    // Inside of strings, replace absolute paths that have been truncated with
+    // any string. These tend to contain homedirs with usernames, not good.
+    $out = preg_replace("/'\\/.*\.\\.\\.'/", "'%s'", $out);
+    $out = preg_replace("/'file:\/\\/.*\.\\.\\.'/", "'%s'", $out);
     $out = str_replace("\0", '%0', $out);
     return $out;
 }