bug fix
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				@ -108,8 +108,8 @@ const uml = async className => {
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    const Module = await import('./file=themes/mermaid_editor.js');
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					    const Module = await import('./file=themes/mermaid_editor.js');
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    function do_render(block, code, codeContent) {
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					    function do_render(block, code, codeContent, cnt) {
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        var rendered_content = mermaid.render(`_diagram_${i}`, code);
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					        var rendered_content = mermaid.render(`_diagram_${cnt}`, code);
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        ////////////////////////////// 记录有哪些代码已经被渲染了 ///////////////////////////////////
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					        ////////////////////////////// 记录有哪些代码已经被渲染了 ///////////////////////////////////
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        let codeFinishRenderElement = block.querySelector("code_finish_render"); // 如果block下已存在code_already_rendered元素,则获取它
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					        let codeFinishRenderElement = block.querySelector("code_finish_render"); // 如果block下已存在code_already_rendered元素,则获取它
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        if (codeFinishRenderElement) {                                             // 如果block下已存在code_already_rendered元素
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					        if (codeFinishRenderElement) {                                             // 如果block下已存在code_already_rendered元素
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@ -148,7 +148,7 @@ const uml = async className => {
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    const config = (typeof mermaidConfig === "undefined") ? defaultConfig : mermaidConfig
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					    const config = (typeof mermaidConfig === "undefined") ? defaultConfig : mermaidConfig
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    mermaid.initialize(config)
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					    mermaid.initialize(config)
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    // 查找需要渲染的元素 Find all of our Mermaid sources and render them.
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					    // 查找需要渲染的元素 Find all of our Mermaid sources and render them.
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    const blocks = document.querySelectorAll(`pre.${className}`);
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					    const blocks = document.querySelectorAll(`pre.mermaid`);
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    for (let i = 0; i < blocks.length; i++) {
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					    for (let i = 0; i < blocks.length; i++) {
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        var block = blocks[i]
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					        var block = blocks[i]
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@ -174,12 +174,12 @@ const uml = async className => {
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        ////////////////////////////// 在这里才真正开始渲染 ///////////////////////////////////
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					        ////////////////////////////// 在这里才真正开始渲染 ///////////////////////////////////
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        try {
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					        try {
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            do_render(block, code, codeContent);
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					            do_render(block, code, codeContent, i);
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            // console.log("渲染", codeContent);
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					            // console.log("渲染", codeContent);
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        } catch (err) {
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					        } catch (err) {
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            try {
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					            try {
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                var lines = code.split('\n'); if (lines.length < 2) { continue; }
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					                var lines = code.split('\n'); if (lines.length < 2) { continue; }
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                do_render(block, removeLastLine(code), codeContent);
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					                do_render(block, removeLastLine(code), codeContent, i);
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                // console.log("渲染", codeContent);
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					                // console.log("渲染", codeContent);
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            } catch (err) {
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					            } catch (err) {
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                console.log("以下代码不能渲染", code, removeLastLine(code), err);
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					                console.log("以下代码不能渲染", code, removeLastLine(code), err);
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