How to get -RC2 is tarball name?

[Jason E. Hale]

On Fri, Apr 20, 2018 at 1:48 AM, Gary Aitken <freebsd at dreamchaser.org> wrote:
> I'm trying to fetch:
>   https://download.gimp.org/mirror/pub/gimp/v2.10/gimp-2.10.0-RC2.tar.bz2
> Both the RC2 and the bz2 are giving me problems.
> I've tried every combination I can think of and can't seem to get the
> right thing.  In order to get the -RC2 I had to resort to:
>
> PORTNAME?=  gimp-devel-app
> DISTVERSION=    2.10.0
> GIMPVERSION=    RC2
> DISTNAME=    gimp-${DISTVERSION}-${GIMPVERSION}
> MASTER_SITES=   https://download.gimp.org/mirror/pub/gimp/v2.10/
>
> but that asks for .../v2.10/gimp-2.10.0-RC2.tar.gz
> tacking the .tar.bz2 on the end of DISTNAME doesn't help.
>
> I know this totally ignores all the other directives about
>   MASTER_SITES= GIMP
> and recommendations for PORT/DIST NAME and VERSION, but I can't get
> any other combination to get even this far.
>
> Is there a way to get the portname "gimp-devel-app" truncated to "gimp"
> with some operator X in ${PORTNAME:X}?  I didn't see them described in
> the handbook.
>
> Is there a variable I can override for the tar.bz2 part?
>
> Thanks,
> Gary

Based on the graphics/gimp-app port currently in the ports tree, here
is what you should do:

Index: Makefile
===================================================================
--- Makefile    (revision 467811)
+++ Makefile    (working copy)
@@ -2,12 +2,11 @@
 # $FreeBSD$

 PORTNAME?=     gimp-app
-PORTVERSION=   2.8.22
-PORTREVISION=  1
+DISTVERSION=   2.10.0-RC2
 PORTEPOCH?=    1
 CATEGORIES?=   graphics gnome
-MASTER_SITES=  GIMP/gimp/v${PORTVERSION:R}
-DISTNAME=      gimp-${PORTVERSION}
+MASTER_SITES=  GIMP/gimp/v${PORTVERSION:R:R}
+DISTNAME=      gimp-${DISTVERSION}

 MAINTAINER=    gnome at FreeBSD.org
 COMMENT=       GNU Image Manipulation Program