I18N: Make the minimum input length to start searching posts in the "Insert/edit link" modal localizable.

Props Toro_Unit, birgire, miyauchi, swissspidy, ocean90.
Fixes #44662.
Built from https://develop.svn.wordpress.org/trunk@46988


git-svn-id: http://core.svn.wordpress.org/trunk@46788 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/wplink.js

@@ -507,9 +507,10 @@
 
 		searchInternalLinks: function() {
 			var waiting,
-				search = inputs.search.val() || '';
+				search = inputs.search.val() || '',
+				minInputLength = parseInt( wpLinkL10n.minInputLength, 10 ) || 3;
 
-			if ( search.length > 2 ) {
+			if ( search.length >= minInputLength ) {
 				rivers.recent.hide();
 				rivers.search.show();
 

wp-includes/script-loader.php

@@ -1504,6 +1504,8 @@ function wp_default_scripts( &$scripts ) {
 			'noMatchesFound' => __( 'No results found.' ),
 			'linkSelected'   => __( 'Link selected.' ),
 			'linkInserted'   => __( 'Link inserted.' ),
+			/* translators: Minimum input length in characters to start searching posts in the "Insert/edit link" modal. */
+			'minInputLength' => (int) _x( '3', 'minimum input length for searching post links' ),
 		)
 	);
 

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-46987';
+$wp_version = '5.4-alpha-46988';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.