Avoid some have() calls.

Single file existence etc checks are cheaper than full $PATH lookups.

completions/_modules

@@ -19,7 +19,7 @@
 
 # Test for existence of /etc/profile.d/modules.sh too because we may end up
 # being sourced before it and thus before the `module' alias has been defined.
-have module || [ -f /etc/profile.d/modules.sh ] && {
+[ -f /etc/profile.d/modules.sh ] || have module && {
 
 _module_list ()
 {

completions/pkgtools

@@ -1,6 +1,6 @@
 # bash completion for Slackware Linux pkgtools
 
-have removepkg && [ -f /etc/slackware-version ] &&
+[ -f /etc/slackware-version ] && have removepkg &&
 _removepkg()
 {
     local packages cur

completions/service

@@ -4,7 +4,7 @@
 # 'service' command and/or the SysV init.d directory, followed by
 # that script's available commands
 #
-{ have service || [ -d /etc/init.d/ ]; } &&
+[ -d /etc/init.d ] || have service &&
 _service()
 {
     local cur prev sysvdir