fix: Node with text renders by default as Markdown

.changeset/gold-ducks-sort.md

@@ -0,0 +1,5 @@
+---
+'mermaid': patch
+---
+
+fix: Proper separation between strings and markdown strings

cypress/integration/rendering/flowchart.spec.js

@@ -895,7 +895,7 @@ graph TD
     imgSnapshotTest(
       `
       graph TD
-        classDef default fill:#a34,stroke:#000,stroke-width:4px,color:#fff 
+        classDef default fill:#a34,stroke:#000,stroke-width:4px,color:#fff
         hello --> default
       `,
       { htmlLabels: true, flowchart: { htmlLabels: true }, securityLevel: 'loose' }
@@ -917,4 +917,24 @@ graph TD
       }
     );
   });
+  it('68: should be able to string and markdown labels (#5824)', () => {
+    imgSnapshotTest(
+      `
+flowchart TB
+    mermaid{"What is\nyourmermaid version?"} --> v10["<11"] --"\`<**1**1\`"--> fine["No bug"]
+    mermaid --> v11[">= v11"] -- ">= v11" --> broken["Affected by https://github.com/mermaid-js/mermaid/issues/5824"]
+    subgraph subgraph1["\`How to fix **fix**\`"]
+        broken --> B["B"]
+    end
+    githost["Github, Gitlab, BitBucket, etc."]
+    githost2["\`Github, Gitlab, BitBucket, etc.\`"]
+    a["1."]
+    b["- x"]
+    `,
+      {
+        flowchart: { htmlLabels: true },
+        securityLevel: 'loose',
+      }
+    );
+  });
 });

cypress/platform/knsv2.html

@@ -116,7 +116,7 @@
 
 
     </pre>
-    <pre id="diagram4" class="mermaid">
+    <pre id="diagram4" class="mermaid2">
 ---
 config:
   layout: elk
@@ -155,21 +155,21 @@
     n8@{ shape: rect}
 
     </pre>
-    <pre id="diagram4" class="mermaid2">
+    <pre id="diagram4" class="mermaid">
 ---
-config:
-  layout: elk
+title: https://github.com/mermaid-js/mermaid/issues/5824
 ---
-flowchart LR
- subgraph s1["Untitled subgraph"]
-        n1["Evaluate"]
-        n2["Option 1"]
-  end
-    n1 -- One --> n2
-
-
-
-
+%% 6048, 5824
+flowchart TB
+    mermaid{"What is\nyourmermaid version?"} --> v10["<11"] --"`<**1**1`"--> fine["No bug"]
+    mermaid --> v11[">= v11"] -- ">= v11" --> broken["Affected by https://github.com/mermaid-js/mermaid/issues/5824"]
+    subgraph subgraph1["`How to fix **fix**`"]
+        broken --> B["B"]
+    end
+    githost["Github, Gitlab, BitBucket, etc."]
+    githost2["`Github, Gitlab, BitBucket, etc.`"]
+    a["1."]
+    b["- x"]
     </pre>
     <pre id="diagram4" class="mermaid2">
 ---

packages/mermaid/src/diagrams/flowchart/flowDb.ts

@@ -896,6 +896,7 @@ const addNodeFromVertex = (
     const baseNode = {
       id: vertex.id,
       label: vertex.text,
+      labelType: vertex.labelType,
       labelStyle: '',
       parentId,
       padding: config.flowchart?.padding || 8,
@@ -1002,6 +1003,7 @@ export const getData = () => {
       end: rawEdge.end,
       type: rawEdge.type ?? 'normal',
       label: rawEdge.text,
+      labelType: rawEdge.labelType,
       labelpos: 'c',
       thickness: rawEdge.stroke,
       minlen: rawEdge.length,

packages/mermaid/src/rendering-util/rendering-elements/edges.js

@@ -26,12 +26,16 @@ export const getLabelStyles = (styleArray) => {
 export const insertEdgeLabel = async (elem, edge) => {
   let useHtmlLabels = evaluate(getConfig().flowchart.htmlLabels);
 
-  const labelElement = await createText(elem, edge.label, {
-    style: getLabelStyles(edge.labelStyle),
-    useHtmlLabels,
-    addSvgBackground: true,
-    isNode: false,
-  });
+  const labelElement =
+    edge.labelType === 'markdown'
+      ? await createText(elem, edge.label, {
+          style: getLabelStyles(edge.labelStyle),
+          useHtmlLabels,
+          addSvgBackground: true,
+          isNode: false,
+        })
+      : await createLabel(edge.label, getLabelStyles(edge.labelStyle), undefined, false);
+
   log.info('abc82', edge, edge.labelType);
 
   // Create outer g, edgeLabel, this will be positioned after graph layout

packages/mermaid/src/rendering-util/rendering-elements/shapes/util.ts

@@ -1,3 +1,4 @@
+import createLabel from '../createLabel.js';
 import { createText } from '../../createText.js';
 import type { Node } from '../../types.js';
 import { getConfig } from '../../../diagram-api/diagramAPI.js';
@@ -40,14 +41,26 @@ export const labelHelper = async <T extends SVGGraphicsElement>(
     label = typeof node.label === 'string' ? node.label : node.label[0];
   }
 
-  const text = await createText(labelEl, sanitizeText(decodeEntities(label), getConfig()), {
-    useHtmlLabels,
-    width: node.width || getConfig().flowchart?.wrappingWidth,
-    // @ts-expect-error -- This is currently not used. Should this be `classes` instead?
-    cssClasses: 'markdown-node-label',
-    style: node.labelStyle,
-    addSvgBackground: !!node.icon || !!node.img,
-  });
+  let text;
+  if (node.labelType !== 'string') {
+    text = await createText(labelEl, sanitizeText(decodeEntities(label), getConfig()), {
+      useHtmlLabels,
+      width: node.width || getConfig().flowchart?.wrappingWidth,
+      // @ts-expect-error -- This is currently not used. Should this be `classes` instead?
+      cssClasses: 'markdown-node-label',
+      style: node.labelStyle,
+      addSvgBackground: !!node.icon || !!node.img,
+    });
+  } else {
+    const labelElement = await createLabel(
+      sanitizeText(decodeEntities(label), getConfig()),
+      node.labelStyle,
+      false,
+      true
+    );
+    text = labelEl.node()?.appendChild(labelElement);
+  }
+
   // Get the size of the label
   let bbox = text.getBBox();
   const halfPadding = (node?.padding ?? 0) / 2;