SDL2: SDL_KeyboardEvent's "repeat" field does not get populated.

[giogadi]

Possibly related to #21377.

When I hold a key down without releasing it, I would expect to start seeing SDL_KEYDOWN events with the repeat field set. I am seeing multiple SDL_KEYDOWN events, however the repeat field is still set to zero. Example:

SDL_Event e;
while (SDL_PollEvent(&e) != 0) {
    if (e.type == SDL_KEYDOWN) {
        if (e.key.repeat == 0) {
            printf("new key press\n");
        } else {
            printf("repeating\n");
        }
    }
}

When I hold a key down, I'd expect the console to say "new key press" and then spam "repeating". However, I just see lots of spam of "new key press", which means repeat is not being populated correctly.

I'm using Emscripten 3.1.54, which uses SDL 2.26.0. I'm compiling the code with the following command:

emcc main.c -o index.html -sUSE_SDL=2

I'm opening the generated page in Chrome Version 121.0.6167.160 on MacOS 11.7.10.

Version of emscripten/emsdk:

emcc (Emscripten gcc/clang-like replacement + linker emulating GNU ld) 3.1.54 (a95c44ee924d02fa1498f846595485d27c31daa8)
clang version 19.0.0git (https://github.com/llvm/llvm-project e769fb8699e3fa8e40623764f7713bfc783b0330)
Target: wasm32-unknown-emscripten
Thread model: posix
InstalledDir: /Users/luis/code/emsdk/upstream/bin

Full link command and output with -v appended:
log.txt

[giogadi]

The problem was that I was including the wrong SDL header: I needed to include <SDL.h>, not <SDL/SDL.h>.