emacs{,-app}{,-devel}: fix etags-program-name for all cases

See https://trac.macports.org/ticket/72136

editors/emacs/Portfile

@@ -92,21 +92,6 @@ depends_lib-append     port:gmp \
 
 compiler.blacklist-append   *gcc-4.0 *gcc-4.2
 
-post-patch {
-    if {$subport eq $name || $subport eq "emacs-devel"} {
-        # Make etags-program-name match the etags binary, which we
-        # rename to etags-emacs in post-destroot to avoid conflicts
-        # with xemacs. See https://trac.macports.org/ticket/72136.
-        reinplace -E {s|(Vetags_program_name = build[a-z_]*_string )\("etags"\)|\1("etags-emacs")|} \
-            ${worksrcpath}/src/callproc.c
-        if {[catch {exec grep -qF {("etags-emacs")} ${worksrcpath}/src/callproc.c}]} {
-            return -code error "Failed to patch etags-program-name in src/callproc.c;\
-                upstream source may have changed. See\
-                https://trac.macports.org/ticket/72136"
-        }
-    }
-}
-
 post-destroot {
     xinstall -d ${destroot}${prefix}/share/emacs/${version}/leim
     delete ${destroot}${prefix}/bin/ctags
@@ -116,6 +101,10 @@ post-destroot {
         # avoid conflicts with xemacs
         move ${destroot}${prefix}/bin/etags ${destroot}${prefix}/bin/etags-emacs
         move ${destroot}${prefix}/share/man/man1/etags.1.gz ${destroot}${prefix}/share/man/man1/etags-emacs.1.gz
+
+        file mkdir ${destroot}${prefix}/share/emacs/site-lisp
+        file copy ${filespath}/site-start.el \
+            ${destroot}${prefix}/share/emacs/site-lisp/site-start.el
     }
 }
 
@@ -139,7 +128,7 @@ platform darwin {
 
 if {$subport eq $name || $subport eq "emacs-app"} {
     version         30.2
-    revision        10
+    revision        11
     checksums       rmd160  fefdd3fcd453d733114f609a3e122b2529cc7410 \
                     sha256  1d79a4ba4d6596f302a7146843fe59cf5caec798190bcc07c907e7ba244b076d \
                     size    83059014
@@ -292,6 +281,8 @@ if {$subport eq "emacs-app" || $subport eq "emacs-app-devel"} {
             ${destroot}${applications_dir}/Emacs.app/Contents/Resources/site-lisp/site-start.el
         reinplace "s|__PREFIX__|${prefix}|g" \
             ${destroot}${applications_dir}/Emacs.app/Contents/Resources/site-lisp/site-start.el
+        reinplace "s|__APPLICATIONS_DIR__|${applications_dir}|g" \
+            ${destroot}${applications_dir}/Emacs.app/Contents/Resources/site-lisp/site-start.el
     }
 
     variant imagemagick description {Use ImageMagick} {

editors/emacs/files/site-start-app.el

@@ -16,3 +16,5 @@
 ;; Use the OS X Emoji font for Emoticons
 (when (fboundp 'set-fontset-font)
   (set-fontset-font t 'emoji '("Apple Color Emoji" . "iso10646-1") nil 'prepend))
+
+(setq etags-program-name "__APPLICATIONS_DIR__/Emacs.app/Contents/MacOS/bin/etags")

editors/emacs/files/site-start.el

@@ -0,0 +1,3 @@
+;;  -*- lexical-binding: t; -*-
+
+(setq etags-program-name "etags-emacs")