PerplexityのProSearchなどの日本語変換の確定でクエリが送信される問題を解決するユーザースクリプトの公開(ホームでたまに送信される問題が発生してるようなので、再度対応)

// ==UserScript==
// @name         Universal Composition Events
// @namespace    toshikawa&willplion&Claude&GPT-4o
// @version      1.91
// @description  Prevent Enter key from submitting search query during Japanese input on any site
// @match        *://*.perplexity.ai/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function addEventListeners(input_element) {
        var isComposing = false;

        // 日本語入力開始
        input_element.addEventListener('compositionstart', function(){
            isComposing = true;
        });

        // 日本語入力終了
        input_element.addEventListener('compositionend', function(){
            isComposing = false;
        });

        // 修正後のhandleIMEEnter関数
        function handleIMEEnter(event) {
            if (event.code == "Enter" && isComposing) {
                event.stopPropagation();
                event.preventDefault();
            }
        }

        // handleIMEEnter関数をキーダウンイベントのリスナーとして登録
        input_element.addEventListener('keydown', handleIMEEnter);
    }

    // 初期化時に、特定のテキスト入力要素にイベントリスナーを追加
    var input_elements = document.querySelectorAll(".items-center.flex.w-full.outline-none.focus\\:outline-none.focus\\:ring-borderMain.font-sans.flex.items-center.dark\\:bg-offsetDark.dark\\:text-textMainDark.dark\\:placeholder-textOffDark.dark\\:border-borderMainDark.dark\\:focus\\:ring-borderMainDark.selection\\:bg-superDuper.selection\\:text-textMain.duration-200.transition-all.bg-background.border.text-textMain.border-borderMain.focus\\:ring-1.placeholder-textOff.shadow-sm.rounded-t-\\[32px\\].rounded-b-\\[32px\\].py-sm.px-sm textarea");
    input_elements.forEach(addEventListeners);

    // MutationObserverを使用して、新しく追加されたテキスト入力要素を監視
    var observer = new MutationObserver(function(mutations) {
        var newInputElements = [];
        mutations.forEach(function(mutation) {
            if (mutation.type === 'childList') {
                mutation.addedNodes.forEach(function(node) {
                    if (node.nodeType === Node.ELEMENT_NODE &&
                        node.matches(".items-center.flex.w-full.outline-none.focus\\:outline-none.focus\\:ring-borderMain.font-sans.flex.items-center.dark\\:bg-offsetDark.dark\\:text-textMainDark.dark\\:placeholder-textOffDark.dark\\:border-borderMainDark.dark\\:focus\\:ring-borderMainDark.selection\\:bg-superDuper.selection\\:text-textMain.duration-200.transition-all.bg-background.border.text-textMain.border-borderMain.focus\\:ring-1.placeholder-textOff.shadow-sm.rounded-t-\\[32px\\].rounded-b-\\[32px\\].py-sm.px-sm textarea")) {
                        newInputElements.push(node);
                    }
                    var nestedInputElements = node.querySelectorAll(".items-center.flex.w-full.outline-none.focus\\:outline-none.focus\\:ring-borderMain.font-sans.flex.items-center.dark\\:bg-offsetDark.dark\\:text-textMainDark.dark\\:placeholder-textOffDark.dark\\:border-borderMainDark.dark\\:focus\\:ring-borderMainDark.selection\\:bg-superDuper.selection\\:text-textMain.duration-200.transition-all.bg-background.border.text-textMain.border-borderMain.focus\\:ring-1.placeholder-textOff.shadow-sm.rounded-t-\\[32px\\].rounded-b-\\[32px\\].py-sm.px-sm textarea");
                    newInputElements.push(...nestedInputElements);
                });
            }
        });
        newInputElements.forEach(addEventListeners);
    });

    // 全てのdiv要素を監視対象とする
    var observerConfig = {
        subtree: true,
        childList: true
    };
    observer.observe(document.body, observerConfig);
})();