# __unused

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/compat.h#L68
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-define-compat-h-__unused/

```c
#define __unused __attribute__ ((__unused__))
```

## Referenced by

- [`alerts_callback`](/en/tmux/3.7c/reference/c-function-alerts-c-alerts_callback/) (function)
- [`alerts_timer`](/en/tmux/3.7c/reference/c-function-alerts-c-alerts_timer/) (function)
- [`cfg_client_done`](/en/tmux/3.7c/reference/c-function-cfg-c-cfg_client_done/) (function)
- [`cfg_done`](/en/tmux/3.7c/reference/c-function-cfg-c-cfg_done/) (function)
- [`client_dispatch`](/en/tmux/3.7c/reference/c-function-client-c-client_dispatch/) (function)
- [`client_file_check_cb`](/en/tmux/3.7c/reference/c-function-client-c-client_file_check_cb/) (function)
- [`cmd_bind_key_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-bind-key-c-cmd_bind_key_args_parse/) (function)
- [`cmd_choose_tree_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-choose-tree-c-cmd_choose_tree_args_parse/) (function)
- [`cmd_command_prompt_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-command-prompt-c-cmd_command_prompt_args_parse/) (function)
- [`cmd_confirm_before_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-confirm-before-c-cmd_confirm_before_args_parse/) (function)
- [`cmd_confirm_before_callback`](/en/tmux/3.7c/reference/c-function-cmd-confirm-before-c-cmd_confirm_before_callback/) (function)
- [`cmd_display_menu_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-display-menu-c-cmd_display_menu_args_parse/) (function)
- [`cmd_display_panes_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-display-panes-c-cmd_display_panes_args_parse/) (function)
- [`cmd_display_panes_draw`](/en/tmux/3.7c/reference/c-function-cmd-display-panes-c-cmd_display_panes_draw/) (function)
- [`cmd_display_panes_free`](/en/tmux/3.7c/reference/c-function-cmd-display-panes-c-cmd_display_panes_free/) (function)
- [`cmd_if_shell_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-if-shell-c-cmd_if_shell_args_parse/) (function)
- [`cmd_kill_server_exec`](/en/tmux/3.7c/reference/c-function-cmd-kill-server-c-cmd_kill_server_exec/) (function)
- [`cmd_load_buffer_done`](/en/tmux/3.7c/reference/c-function-cmd-load-buffer-c-cmd_load_buffer_done/) (function)
- [`cmd_pipe_pane_error_callback`](/en/tmux/3.7c/reference/c-function-cmd-pipe-pane-c-cmd_pipe_pane_error_callback/) (function)
- [`cmd_pipe_pane_read_callback`](/en/tmux/3.7c/reference/c-function-cmd-pipe-pane-c-cmd_pipe_pane_read_callback/) (function)
- [`cmd_pipe_pane_write_callback`](/en/tmux/3.7c/reference/c-function-cmd-pipe-pane-c-cmd_pipe_pane_write_callback/) (function)
- [`cmd_resize_pane_mouse_update`](/en/tmux/3.7c/reference/c-function-cmd-resize-pane-c-cmd_resize_pane_mouse_update/) (function)
- [`cmd_run_shell_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-run-shell-c-cmd_run_shell_args_parse/) (function)
- [`cmd_run_shell_timer`](/en/tmux/3.7c/reference/c-function-cmd-run-shell-c-cmd_run_shell_timer/) (function)
- [`cmd_save_buffer_done`](/en/tmux/3.7c/reference/c-function-cmd-save-buffer-c-cmd_save_buffer_done/) (function)
- [`cmd_set_option_args_parse`](/en/tmux/3.7c/reference/c-function-cmd-set-option-c-cmd_set_option_args_parse/) (function)
- [`cmd_source_file_complete_cb`](/en/tmux/3.7c/reference/c-function-cmd-source-file-c-cmd_source_file_complete_cb/) (function)
- [`cmd_wait_for_signal`](/en/tmux/3.7c/reference/c-function-cmd-wait-for-c-cmd_wait_for_signal/) (function)
- [`cmdq_empty_command`](/en/tmux/3.7c/reference/c-function-cmd-queue-c-cmdq_empty_command/) (function)
- [`control_check_subs_timer`](/en/tmux/3.7c/reference/c-function-control-c-control_check_subs_timer/) (function)
- [`control_error_callback`](/en/tmux/3.7c/reference/c-function-control-c-control_error_callback/) (function)
- [`control_notify_session_closed`](/en/tmux/3.7c/reference/c-function-control_notify_session_closed/) (function)
- [`control_notify_session_created`](/en/tmux/3.7c/reference/c-function-control_notify_session_created/) (function)
- [`control_notify_window_linked`](/en/tmux/3.7c/reference/c-function-control_notify_window_linked/) (function)
- [`control_notify_window_unlinked`](/en/tmux/3.7c/reference/c-function-control_notify_window_unlinked/) (function)
- [`control_read_callback`](/en/tmux/3.7c/reference/c-function-control-c-control_read_callback/) (function)
- [`control_write_callback`](/en/tmux/3.7c/reference/c-function-control-c-control_write_callback/) (function)
- [`default_window_size_skip_client`](/en/tmux/3.7c/reference/c-function-resize-c-default_window_size_skip_client/) (function)
- [`file_fire_done_cb`](/en/tmux/3.7c/reference/c-function-file-c-file_fire_done_cb/) (function)
- [`file_push_cb`](/en/tmux/3.7c/reference/c-function-file-c-file_push_cb/) (function)
- [`file_read_callback`](/en/tmux/3.7c/reference/c-function-file-c-file_read_callback/) (function)
- [`file_read_error_callback`](/en/tmux/3.7c/reference/c-function-file-c-file_read_error_callback/) (function)
- [`file_write_callback`](/en/tmux/3.7c/reference/c-function-file-c-file_write_callback/) (function)
- [`file_write_error_callback`](/en/tmux/3.7c/reference/c-function-file-c-file_write_error_callback/) (function)
- [`format_cb_buffer_mode_format`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_buffer_mode_format/) (function)
- [`format_cb_client_mode_format`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_client_mode_format/) (function)
- [`format_cb_config_files`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_config_files/) (function)
- [`format_cb_host`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_host/) (function)
- [`format_cb_host_short`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_host_short/) (function)
- [`format_cb_next_session_id`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_next_session_id/) (function)
- [`format_cb_pid`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_pid/) (function)
- [`format_cb_server_sessions`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_server_sessions/) (function)
- [`format_cb_sixel_support`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_sixel_support/) (function)
- [`format_cb_socket_path`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_socket_path/) (function)
- [`format_cb_start_time`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_start_time/) (function)
- [`format_cb_tree_mode_format`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_tree_mode_format/) (function)
- [`format_cb_uid`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_uid/) (function)
- [`format_cb_user`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_user/) (function)
- [`format_cb_version`](/en/tmux/3.7c/reference/c-function-format-c-format_cb_version/) (function)
- [`input_csi_dispatch_sm_graphics`](/en/tmux/3.7c/reference/c-function-input-c-input_csi_dispatch_sm_graphics/) (function)
- [`input_ground_timer_callback`](/en/tmux/3.7c/reference/c-function-input-c-input_ground_timer_callback/) (function)
- [`input_request_timer_callback`](/en/tmux/3.7c/reference/c-function-input-c-input_request_timer_callback/) (function)
- [`job_error_callback`](/en/tmux/3.7c/reference/c-function-job-c-job_error_callback/) (function)
- [`job_read_callback`](/en/tmux/3.7c/reference/c-function-job-c-job_read_callback/) (function)
- [`job_write_callback`](/en/tmux/3.7c/reference/c-function-job-c-job_write_callback/) (function)
- [`key_bindings_init_done`](/en/tmux/3.7c/reference/c-function-key-bindings-c-key_bindings_init_done/) (function)
- [`key_bindings_next`](/en/tmux/3.7c/reference/c-function-key_bindings_next/) (function)
- [`key_bindings_read_only`](/en/tmux/3.7c/reference/c-function-key-bindings-c-key_bindings_read_only/) (function)
- [`layout_get_floating_cell`](/en/tmux/3.7c/reference/c-function-layout_get_floating_cell/) (function)
- [`log_event_cb`](/en/tmux/3.7c/reference/c-function-log-c-log_event_cb/) (function)
- [`menu_check_cb`](/en/tmux/3.7c/reference/c-function-menu_check_cb/) (function)
- [`menu_draw_cb`](/en/tmux/3.7c/reference/c-function-menu_draw_cb/) (function)
- [`menu_free_cb`](/en/tmux/3.7c/reference/c-function-menu_free_cb/) (function)
- [`menu_mode_cb`](/en/tmux/3.7c/reference/c-function-menu_mode_cb/) (function)
- [`mode_tree_display_help`](/en/tmux/3.7c/reference/c-function-mode-tree-c-mode_tree_display_help/) (function)
- [`mode_tree_filter_callback`](/en/tmux/3.7c/reference/c-function-mode-tree-c-mode_tree_filter_callback/) (function)
- [`mode_tree_menu_callback`](/en/tmux/3.7c/reference/c-function-mode-tree-c-mode_tree_menu_callback/) (function)
- [`mode_tree_search_callback`](/en/tmux/3.7c/reference/c-function-mode-tree-c-mode_tree_search_callback/) (function)
- [`name_time_callback`](/en/tmux/3.7c/reference/c-function-names-c-name_time_callback/) (function)
- [`osdep_get_name`](/en/tmux/3.7c/reference/c-function-osdep_get_name/) (function)
- [`popup_menu_done`](/en/tmux/3.7c/reference/c-function-popup-c-popup_menu_done/) (function)
- [`popup_mode_cb`](/en/tmux/3.7c/reference/c-function-popup-c-popup_mode_cb/) (function)
- [`popup_resize_cb`](/en/tmux/3.7c/reference/c-function-popup-c-popup_resize_cb/) (function)
- [`proc_event_cb`](/en/tmux/3.7c/reference/c-function-proc-c-proc_event_cb/) (function)
- [`proc_signal_cb`](/en/tmux/3.7c/reference/c-function-proc-c-proc_signal_cb/) (function)
- [`recalculate_size_skip_client`](/en/tmux/3.7c/reference/c-function-resize-c-recalculate_size_skip_client/) (function)
- [`screen_write_offset_timer`](/en/tmux/3.7c/reference/c-function-screen-write-c-screen_write_offset_timer/) (function)
- [`screen_write_sync_callback`](/en/tmux/3.7c/reference/c-function-screen-write-c-screen_write_sync_callback/) (function)
- [`server_accept`](/en/tmux/3.7c/reference/c-function-server-c-server_accept/) (function)
- [`server_client_click_timer`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_click_timer/) (function)
- [`server_client_command_done`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_command_done/) (function)
- [`server_client_default_command`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_default_command/) (function)
- [`server_client_free`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_free/) (function)
- [`server_client_overlay_timer`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_overlay_timer/) (function)
- [`server_client_read_only`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_read_only/) (function)
- [`server_client_redraw_timer`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_redraw_timer/) (function)
- [`server_client_repeat_timer`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_repeat_timer/) (function)
- [`server_client_resize_timer`](/en/tmux/3.7c/reference/c-function-server-client-c-server_client_resize_timer/) (function)
- [`server_tidy_event`](/en/tmux/3.7c/reference/c-function-server-c-server_tidy_event/) (function)
- [`session_free`](/en/tmux/3.7c/reference/c-function-session-c-session_free/) (function)
- [`session_lock_timer`](/en/tmux/3.7c/reference/c-function-session-c-session_lock_timer/) (function)
- [`status_message_callback`](/en/tmux/3.7c/reference/c-function-status-c-status_message_callback/) (function)
- [`status_prompt_accept`](/en/tmux/3.7c/reference/c-function-status-c-status_prompt_accept/) (function)
- [`status_prompt_menu_callback`](/en/tmux/3.7c/reference/c-function-status-c-status_prompt_menu_callback/) (function)
- [`status_timer_callback`](/en/tmux/3.7c/reference/c-function-status-c-status_timer_callback/) (function)
- [`tty_acs_reverse_get`](/en/tmux/3.7c/reference/c-function-tty_acs_reverse_get/) (function)
- [`tty_check_us`](/en/tmux/3.7c/reference/c-function-tty-c-tty_check_us/) (function)
- [`tty_clipboard_query_callback`](/en/tmux/3.7c/reference/c-function-tty-c-tty_clipboard_query_callback/) (function)
- [`tty_is_visible`](/en/tmux/3.7c/reference/c-function-tty-c-tty_is_visible/) (function)
- [`tty_keys_callback`](/en/tmux/3.7c/reference/c-function-tty-keys-c-tty_keys_callback/) (function)
- [`tty_large_region`](/en/tmux/3.7c/reference/c-function-tty-c-tty_large_region/) (function)
- [`tty_read_callback`](/en/tmux/3.7c/reference/c-function-tty-c-tty_read_callback/) (function)
- [`tty_start_timer_callback`](/en/tmux/3.7c/reference/c-function-tty-c-tty_start_timer_callback/) (function)
- [`tty_timer_callback`](/en/tmux/3.7c/reference/c-function-tty-c-tty_timer_callback/) (function)
- [`tty_write_callback`](/en/tmux/3.7c/reference/c-function-tty-c-tty_write_callback/) (function)
- [`window_buffer_build`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_build/) (function)
- [`window_buffer_do_delete`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_do_delete/) (function)
- [`window_buffer_do_paste`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_do_paste/) (function)
- [`window_buffer_draw`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_draw/) (function)
- [`window_buffer_key`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_key/) (function)
- [`window_buffer_search`](/en/tmux/3.7c/reference/c-function-window-buffer-c-window_buffer_search/) (function)
- [`window_client_build`](/en/tmux/3.7c/reference/c-function-window-client-c-window_client_build/) (function)
- [`window_client_do_detach`](/en/tmux/3.7c/reference/c-function-window-client-c-window_client_do_detach/) (function)
- [`window_client_draw`](/en/tmux/3.7c/reference/c-function-window-client-c-window_client_draw/) (function)
- [`window_client_init`](/en/tmux/3.7c/reference/c-function-window-client-c-window_client_init/) (function)
- [`window_client_key`](/en/tmux/3.7c/reference/c-function-window-client-c-window_client_key/) (function)
- [`window_clock_init`](/en/tmux/3.7c/reference/c-function-window-clock-c-window_clock_init/) (function)
- [`window_clock_key`](/en/tmux/3.7c/reference/c-function-window-clock-c-window_clock_key/) (function)
- [`window_clock_timer_callback`](/en/tmux/3.7c/reference/c-function-window-clock-c-window_clock_timer_callback/) (function)
- [`window_copy_cmd_cancel`](/en/tmux/3.7c/reference/c-function-window-copy-c-window_copy_cmd_cancel/) (function)
- [`window_copy_init`](/en/tmux/3.7c/reference/c-function-window-copy-c-window_copy_init/) (function)
- [`window_copy_init_ctx_cb`](/en/tmux/3.7c/reference/c-function-window-copy-c-window_copy_init_ctx_cb/) (function)
- [`window_copy_scroll_timer`](/en/tmux/3.7c/reference/c-function-window-copy-c-window_copy_scroll_timer/) (function)
- [`window_copy_view_init`](/en/tmux/3.7c/reference/c-function-window-copy-c-window_copy_view_init/) (function)
- [`window_customize_build`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_build/) (function)
- [`window_customize_change_current_callback`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_change_current_callback/) (function)
- [`window_customize_change_each`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_change_each/) (function)
- [`window_customize_change_tagged_callback`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_change_tagged_callback/) (function)
- [`window_customize_draw_key`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_draw_key/) (function)
- [`window_customize_height`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_height/) (function)
- [`window_customize_key`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_key/) (function)
- [`window_customize_set_command_callback`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_set_command_callback/) (function)
- [`window_customize_set_note_callback`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_set_note_callback/) (function)
- [`window_customize_set_option_callback`](/en/tmux/3.7c/reference/c-function-window-customize-c-window_customize_set_option_callback/) (function)
- [`window_pane_error_callback`](/en/tmux/3.7c/reference/c-function-window-c-window_pane_error_callback/) (function)
- [`window_pane_input_callback`](/en/tmux/3.7c/reference/c-function-window-c-window_pane_input_callback/) (function)
- [`window_pane_read_callback`](/en/tmux/3.7c/reference/c-function-window-c-window_pane_read_callback/) (function)
- [`window_tree_command_callback`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_command_callback/) (function)
- [`window_tree_command_done`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_command_done/) (function)
- [`window_tree_command_each`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_command_each/) (function)
- [`window_tree_key`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_key/) (function)
- [`window_tree_kill_current_callback`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_kill_current_callback/) (function)
- [`window_tree_kill_each`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_kill_each/) (function)
- [`window_tree_kill_tagged_callback`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_kill_tagged_callback/) (function)
- [`window_tree_search`](/en/tmux/3.7c/reference/c-function-window-tree-c-window_tree_search/) (function)

## Referenced declarations

- [`__attribute__`](/en/tmux/3.7c/reference/c-define-compat-h-__attribute__/) (constant)