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tui: emit some termcodes later (after startup) (#7664)

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For some reason, enabling focus reporting during terminal setup, causes
slow rendering during Nvim startup on tmux 2.3 with the tmux
`focus-events` option enabled.

To workaround that issue, this commit defers the request.

closes #7649

init.vim:
    call plug#begin('~/.config/nvim/plugged')
    Plug 'morhetz/gruvbox'
    call plug#end()
    set background=light " background light just to see the effect more quickly
    colorscheme gruvbox
.tmux.conf:
    set -g focus-events on
    set-option -ga terminal-overrides ",xterm-256color:Tc"
    set-option -g default-terminal "screen-256color"

Using `script` to record the terminal session (and `vterm-dump` to
post-process the result):

BEFORE this commit:
    ./build/bin/nvim -u NONE{CR}{LF}
    {DECSM 1049}{DECSM 1}{ESC =}
    {CUP *}{ED 2}{DECSM 2004}{DECSM 1004}{CSI 8,44,156 t}{CSI * r}
    {CUP 1,1}
    {CUP *}{ED 2}{DECSM 25}
    {DECRM 25}{CSI 2   q}{CSI 2   q}
    {CUP *}{ED 2}{LF}
    {ESC (B}{SGR *}{SGR 94}~                                                                                                                                                           {CR}{LF}
    ~                                                                                                                                                           {CR}{LF}

AFTER this commit:
    ./build/bin/nvim -u NONE{CR}{LF}
    {DECSM 1049}{DECSM 1}{ESC =}
    {CUP *}{ED 2}{CSI 8,44,156 t}{CSI * r}
    {CUP 1,1}
    {CUP *}{ED 2}{DECSM 2004}{DECSM 1004}{DECSM 25}
    {DECRM 25}{CSI 2   q}{CSI 2   q}
    {CUP *}{ED 2}{LF}
    {ESC (B}{SGR *}{SGR 94}~                                                                                                                                                           {CR}{LF}
    ~                                                                                                                                                           {CR}{LF}
    ...
This commit is contained in:
Justin M. Keyes 2017-12-01 04:18:34 +01:00 committed by GitHub
parent 3d0ee17c91
commit 27f9b1c7b0
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 4 deletions
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18
src/nvim/tui/tui.c
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@ -167,6 +167,18 @@ static size_t unibi_pre_fmt_str(TUIData *data, unsigned int unibi_index,
return unibi_run(str, data->params, buf, len);
}
/// Emits some termcodes after Nvim startup, which were observed to slowdown
/// rendering during startup in tmux 2.3 (+focus-events). #7649
static void terminfo_start_event(void **argv)
{
UI *ui = argv[0];
TUIData *data = ui->data;
// Enable bracketed paste
unibi_out_ext(ui, data->unibi_ext.enable_bracketed_paste);
// Enable focus reporting
unibi_out_ext(ui, data->unibi_ext.enable_focus_reporting);
}
static void termname_set_event(void **argv)
{
char *termname = argv[0];
@ -244,10 +256,6 @@ static void terminfo_start(UI *ui)
unibi_out(ui, unibi_enter_ca_mode);
unibi_out(ui, unibi_keypad_xmit);
unibi_out(ui, unibi_clear_screen);
// Enable bracketed paste
unibi_out_ext(ui, data->unibi_ext.enable_bracketed_paste);
// Enable focus reporting
unibi_out_ext(ui, data->unibi_ext.enable_focus_reporting);
uv_loop_init(&data->write_loop);
if (data->out_isatty) {
uv_tty_init(&data->write_loop, &data->output_handle.tty, data->out_fd, 0);
@ -296,6 +304,8 @@ static void tui_terminal_start(UI *ui)
update_size(ui);
signal_watcher_start(&data->winch_handle, sigwinch_cb, SIGWINCH);
term_input_start(&data->input);
loop_schedule_deferred(data->loop,
event_create(terminfo_start_event, 1, ui));
}
static void tui_terminal_stop(UI *ui)