Cosmetic changes

1 files changed, 12 insertions, 11 deletions

diff --git a/build2/test/script/script b/build2/test/script/script
index 1127fb3..9fb2a28 100644
--- a/build2/test/script/script
+++ b/build2/test/script/script
@@ -48,23 +48,24 @@ namespace build2
 
       struct command_exit
       {
-        // C/C++ don't apply constraints to program exit code values other than
-        // being of int type.
+        // C/C++ don't apply constraints on program exit code other than it
+        // being of type int.
         //
         // POSIX specifies that only the least significant 8 bits shall be
         // available from wait() and waitpid(); the full value shall be
-        // available from waitid() (read more at
-        // http://pubs.opengroup.org/onlinepubs/9699919799/functions/_Exit.html).
-        // While Linux man page for waitid() doesn't mention any deviations
-        // from the standard the FreeBSD implementation (as of version 11.0)
-        // only returns 8 bits like the other wait*() calls.
+        // available from waitid() (read more at _Exit, _exit Open Group
+        // spec).
+        //
+        // While the Linux man page for waitid() doesn't mention any
+        // deviations from the standard, the FreeBSD implementation (as of
+        // version 11.0) only returns 8 bits like the other wait*() calls.
         //
         // Windows supports 32-bit exit codes.
         //
-        // Note that in shells some exit values can have a special meaning so
-        // using them can be a source of confusion, For bash values in the
-        // [126, 255] range are such a special ones (read more at
-        // http://tldp.org/LDP/abs/html/exitcodes.html).
+        // Note that in shells some exit values can have special meaning so
+        // using them can be a source of confusion. For bash values in the
+        // [126, 255] range are such a special ones (see Appendix E, "Exit
+        // Codes With Special Meanings" in the Advanced Bash-Scripting Guide).
         //
         exit_comparison comparison = exit_comparison::eq;
         uint8_t status = 0;