tuxpaint-completion.bash - use _have no have

For https://sourceforge.net/p/tuxpaint/bugs/290/

docs/CHANGES.txt

@@ -6,7 +6,7 @@ Copyright (c) 2002-2024
 Various contributors (see below, and AUTHORS.txt)
 https://tuxpaint.org/
 
-2024.June.6 (0.9.33)
+2024.June.11 (0.9.33)
   * New Magic Tools:
     ----------------
     * Dither & Dither (Keep Color): Replaces all or part of a drawing
@@ -109,6 +109,11 @@ https://tuxpaint.org/
     * Make screen refresh more snappy on macOS.
       Mark Kim <markuskimius@gmail.com>
 
+    * Replace `have` with `_have` in Tux Paint's BASH completion script.
+      Closes https://sourceforge.net/p/tuxpaint/bugs/290/
+      (h/t Jozef Riha for reporting)
+      Bill Kendrick <bill@newbreedsoftware.com>
+
   * Ports & Building:
     -----------------
     * Simplify the process of building the universal bundle on the macOS by

src/tuxpaint-completion.bash

@@ -3,7 +3,7 @@
 # Bill Kendrick <bill@newbreedsoftware.com>; https://tuxpaint.org/
 # Based on inkscape's completion file, by allali@univ-mlv.fr
 #
-# Last modified 2024-06-02
+# Last modified 2024-06-11
 #
 # $Id$
 
@@ -16,7 +16,7 @@
 # a way to hint to the user, and allow completion, for values after the "="
 # -bjk 2023.12.29
 
-have tuxpaint &&
+_have tuxpaint &&
 _tuxpaint()
 {
         local cur
@@ -126,4 +126,4 @@ _tuxpaint()
         fi
 
 }
-[ "${have:-}" ] && complete -F _tuxpaint $filenames tuxpaint
+complete -F _tuxpaint $filenames tuxpaint