Function slug_from_branch

src/git/git_context.c:199–234

}

static char *slug_from_branch(const char *branch, bool detached) {
    const char *fallback = detached ? "detached" : "working-tree";
    const char *src = detached ? fallback : (branch && branch[0] ? branch : fallback);
    size_t len = strlen(src);
    char *slug = (char *)malloc(len + 1);
    if (!slug) {
        return NULL;
    }

    size_t j = 0;
    bool in_dash = false;
    for (size_t i = 0; i < len; i++) {
        unsigned char c = (unsigned char)src[i];
        if (isalnum(c) || c == '-' || c == '_' || c == '.') {
            if (j == 0 && c == '-') {
                in_dash = true;
                continue;
            }
            slug[j++] = (char)c;
            in_dash = false;
        } else if (j > 0 && !in_dash) {
            slug[j++] = '-';
            in_dash = true;
        }
    }
    while (j > 0 && slug[j - 1] == '-') {
        j--;
    }
    slug[j] = '\0';

    if (slug[0] == '\0') {
        free(slug);
        return git_strdup(fallback);
    }
    return slug;
}

void cbm_git_context_free(cbm_git_context_t *ctx) {
    if (!ctx) {