WordPress at a glance
filter is not described

disable_captions filter-hook . WP 2.6.0

Filters whether to disable captions.

Prevents image captions from being appended to image HTML when inserted into the editor.

Usage

add_filter( 'disable_captions', 'filter_function_name_9463' );
function filter_function_name_9463( $bool ){
	// filter...

	return $bool;
}
$bool(true/false)
Whether to disable appending captions. Returning true to the filter will disable captions.
Default: empty string

Where the hook is called

image_add_caption()
_WP_Editors::editor_settings()
wp_tinymce_inline_scripts()
wp_print_media_templates()
media_upload_type_form()
wp_enqueue_media()
wp-admin/includes/media.php 200
if ( empty($caption) || apply_filters( 'disable_captions', '' ) )
wp-includes/class-wp-editor.php 523
if ( apply_filters( 'disable_captions', '' ) ) {
wp-includes/script-loader.php 630
if ( apply_filters( 'disable_captions', '' ) ) {
wp-includes/media-template.php 835
if ( ! apply_filters( 'disable_captions', '' ) ) : ?>
wp-includes/media-template.php 900
if ( ! apply_filters( 'disable_captions', '' ) ) : ?>
wp-admin/includes/media.php 2106
if ( ! apply_filters( 'disable_captions', '' ) ) {
wp-admin/includes/media.php 2545
if ( ! apply_filters( 'disable_captions', '' ) ) {
wp-includes/media.php 3443
'captions'  => ! apply_filters( 'disable_captions', '' ),

Where the hook is used (in WP core)

Does not used.