`f202e46` slows down editing C code in Doom Emacs

[chabulhwi]

Using git bisect, I've found that diff-hl has made editing C source files in Doom Emacs much slower since f202e46.

• Related issue: Editing C source files has been slower since 3fe5ff6 doomemacs/modules#65

Note that doomemacs/modules@3fe5ff6 bumped diff-hl from 902d082 to 2f1623d. f202e46 is ahead of 2f1623d by 3 commits.

When I try writing the following C code by hand in Doom Emacs, the input lag is quite noticeable.

int main(void)
{
	int a = 10;

	int b[] = {1, 2, 3};

	int c[] = {4, 5, 6, 7};

	int d[] = {8, 9, 10, 11, 12};

	double e[] = {1.2, 3.4, 5.6};

	return 0;
}

I fixed the issue by adding the following line to the end of my packages.el file, which is located in the ~/.config/doom directory.

(package! diff-hl :pin "f8ffd7782623f7e102cf39e66e30b2abaf74d91c")

f8ffd77 is the commit right before f202e46.