build/linux: Enable "Send by email" on AppImage

Hmmm why this was not already enabled? On my tests, it works.
Don't remember why I have not handled this before.

This commit also reorder the xdg-mail position on macOS script.

.gitlab-ci.yml

@@ -226,7 +226,8 @@ deps-debian-nonreloc:
             poppler-data
             python3
             python3-gi
-            python3-gi-cairo" >> Dockerfile
+            python3-gi-cairo
+            xdg-utils" >> Dockerfile
     - echo "RUN echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && locale-gen" >> Dockerfile
     # Prepare environ
     - echo "FROM $CI_REGISTRY_IMAGE:build-debian-${DEB_VERSION}-${RUNNER}" > Dockerfile2;

build/linux/appimage/3_dist-gimp-goappimage.sh

@@ -380,6 +380,8 @@ conf_app GS_LIB "share/ghostscript/10*/Resource/Init"
 ### file-wmf support
 bund_usr "$UNIX_PREFIX" "share/fonts/type1/urw-base35/Nimbus*" --dest "share/libwmf/fonts"
 bund_usr "$UNIX_PREFIX" "share/fonts/type1/urw-base35/StandardSymbols*" --dest "share/libwmf/fonts"
+### "Send by Email" support
+bund_usr "$UNIX_PREFIX" "bin/xdg-email"
 ### Debug menu: if show_debug_menu is true in app/main.c or --show-debug-menu CLI option is set
 #### Image graph support
 bund_usr "$UNIX_PREFIX" "bin/libgvc*" --rename "bin/dot"

build/macos/2_bundle-gimp-uni_base.py

@@ -159,8 +159,6 @@ shutil.copy2(Path(f"{os.getenv('MESON_BUILD_ROOT')}/build/macos/fileicon.icns"),
 
 
 ## BUNDLE BASE (BARE MINIMUM TO RUN GTK APPS).
-### FIXME: Needed for 'Send to Email' support (should be on sendmail.c source)
-bundle(GIMP_SOURCE, "build/macos/patches/xdg-email", "--dest", "MacOS")
 ### Needed for file dialogs (only .compiled file is needed on macOS)
 bundle(OPT_PREFIX, "share/glib-*/schemas/gschemas.compiled")
 ### Mostly bogus since we do use macOS API directly from gimp to open remote files
@@ -256,6 +254,8 @@ if os.path.exists(OPT_PREFIX / "bin/port"):
   bundle(OPT_PREFIX, "share/fonts/libwmf/*", "--dest", "Resources/libwmf/fonts")
 else: #os.path.exists(OPT_PREFIX / "bin/brew"):
   bundle(OPT_PREFIX, "Cellar/libwmf/*/share/libwmf/fonts/*", "--dest", "Resources/libwmf/fonts")
+### FIXME: Needed for 'Send by Email' support (should be on mail.c source)
+bundle(GIMP_SOURCE, "build/macos/patches/xdg-email", "--dest", "MacOS")
 ### Needed for 'Show image graph'.
 #### See: https://gitlab.gnome.org/GNOME/gimp/-/issues/6045
 bundle(OPT_PREFIX, "bin/dot", "--dest", "MacOS")