Describe the bug

See d12frosted's comment for more information.

When i install emacs using the without spacemacs icon argument the resulting emacs is not executable both from Applications folder and terminal. I get a zsh: killed emacs

I can't even run emacs--version or emacs doctor

Command used to install emacs-plus

$ brew install emacs-plus --without-spacemacs-icon 

Installation log
Updating Homebrew...
==> Installing emacs-plus from d12frosted/emacs-plus
Warning: A newer Command Line Tools release is available.
Update them from Software Update in System Preferences or
https://developer.apple.com/download/more/.

==> Downloading https://ftp.gnu.org/gnu/emacs/emacs-26.3.tar.xz
Already downloaded: /Users/albertpare/Library/Caches/Homebrew/downloads/35ddbf65249f3d4c38e087a1fa7606daaf8784b8445fa2c3b4d453ef9b92a18c--emacs-26.3.tar.xz
==> Downloading https://raw.githubusercontent.com/d12frosted/homebrew-emacs-plus/master/patches/multicolor-fonts.patch
Already downloaded: /Users/albertpare/Library/Caches/Homebrew/downloads/6e0bcfe5f86b21ca9f1bf349995832a6143baac4a74e000dff771b2839b6fa7d--multicolor-fonts.patch
==> Downloading https://raw.githubusercontent.com/d12frosted/homebrew-emacs-plus/master/patches/fix-window-role.patch
Already downloaded: /Users/albertpare/Library/Caches/Homebrew/downloads/b7046a273c114e23f734df97967f4016486f1d080bad1ba40dbd53a5c86a09e0--fix-window-role.patch
==> Patching
==> Applying multicolor-fonts.patch
patching file src/macfont.m
Hunk #1 succeeded at 2346 with fuzz 2 (offset -27 lines).
==> Applying fix-window-role.patch
patching file src/nsterm.m
Hunk #1 succeeded at 8368 (offset -158 lines).
==> ImageMagick PKG_CONFIG_PATH:
/usr/local/opt/imagemagick@6/lib/pkgconfig
==> ./configure --enable-locallisppath=/usr/local/share/emacs/site-lisp --infodir=/usr/local/Cellar/emacs-plus/26.3/share/info/emacs --prefix=/usr/local/Cellar/emacs-plus/26.3 --with-xml2 --without-dbus --with-gnutls --with-imagemagick --with-modules --with-rsvg --with-ns
==> make
==> make install
==> Caveats
Emacs.app was installed to:
/usr/local/opt/emacs-plus

To link the application to default Homebrew App location:
ln -s /usr/local/opt/emacs-plus/Emacs.app /Applications

--natural-title-bar option was removed from this formula, in order to
duplicate its effect add following line to your init.el file
(add-to-list 'default-frame-alist '(ns-transparent-titlebar . t))
(add-to-list 'default-frame-alist '(ns-appearance . dark))
or:
(add-to-list 'default-frame-alist '(ns-transparent-titlebar . t))
(add-to-list 'default-frame-alist '(ns-appearance . light))

To have launchd start d12frosted/emacs-plus/emacs-plus now and restart at login:
brew services start d12frosted/emacs-plus/emacs-plus
Or, if you don't want/need a background service you can just run:
emacs
==> Summary
🍺 /usr/local/Cellar/emacs-plus/26.3: 3,993 files, 123.6MB, built in 1 minute 58 seconds

running emacs after this gives
zsh: killed emacs