refactor: improve code readability and selection behavior in markdown-code-run.ts

src/renderer/plugins/markdown-code-run.ts

@@ -171,6 +171,18 @@ const RunCode = defineComponent({
       runner.value = getAllRunners().find((runner) => runner.match(props.language!, props.firstLine!))
     }
 
+    const selectRunResult = (e: MouseEvent) => {
+      e.preventDefault()
+      e.stopPropagation()
+      const target = e.currentTarget as HTMLElement
+
+      const selection = target.ownerDocument.defaultView!.getSelection()
+      const range = target.ownerDocument.createRange()
+      range.selectNodeContents(e.currentTarget as HTMLElement)
+      selection?.removeAllRanges()
+      selection?.addRange(range)
+    }
+
     watchEffect(refreshRunner)
     registerHook('CODE_RUNNER_CHANGE', refreshRunner)
 
@@ -197,7 +209,7 @@ const RunCode = defineComponent({
             onClick: runInXterm
           }),
         ]),
-        h('div', { class: 'p-mcr-run-code-result skip-export', ref: resultRef }, h('output', { key: runResult, innerHTML: runResult })),
+        h('div', { class: 'p-mcr-run-code-result skip-export', ref: resultRef }, h('output', { onDblclick: selectRunResult, key: runResult, innerHTML: runResult })),
         h('div', { class: 'p-mcr-clear-btn-wrapper skip-print' }, h(
           h(
             'div',