Tags: patch Hi, First time trying to contribute here, so apologies for any wrong doing. I haven't signed FSF papers; would be happy to but believe this may fit in to tiny patch territory. This is a feature request to pass custom flags down to the test compile step in go-ts-mode-test-... functions. Specifically I wanted to add the coverprofile argument to unit test invocation. The attached patch seems to do the trick for me. In GNU Emacs 31.0.50 (build 1, aarch64-apple-darwin23.6.0, NS appkit-2487.70 Version 14.6.1 (Build 23G93)) of 2024-09-02 built on Wills-MacBook-Pro.local Windowing system distributor 'Apple', version 10.3.2575 System Description: macOS 15.1.1 Configured using: 'configure --disable-silent-rules --prefix=/nix/store/2hqk7brndnbi3r5c2rjyhx0k19m1q77j-w08r-emacs-92ea393a16e --enable-locallisppath=/nix/store/2hqk7brndnbi3r5c2rjyhx0k19m1q77j-w08r-emacs-92ea393a16e/site-lisp --without-dbus --without-imagemagick --with-mailutils --disable-ns-self-contained --with-cairo --with-modules --with-xml2 --with-gnutls --with-rsvg --with-native-compilation --with-gnutls=ifavailable --enable-mac-app=/nix/store/2hqk7brndnbi3r5c2rjyhx0k19m1q77j-w08r-emacs-92ea393a16e/Applications --with-xwidgets --with-tree-sitter 'CFLAGS=-O3 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk/ -framework AppKit' 'CPPFLAGS=-I/Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk/usr/include -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk/ -I/Library/Developer/CommandLineTools/SDKs/MacOSX14.4.sdk//System/Library/Frameworks/AppKit.framework/Versions/C/Headers -I/nix/store/d3f47kd7kr5xdpcgs3xx7bg2mx5fbb0z-libgccjit-12.2.0/include' 'LDFLAGS=-O3 -L /nix/store/d3f47kd7kr5xdpcgs3xx7bg2mx5fbb0z-libgccjit-12.2.0/lib'' best -- will