function gh-details(){[-n"$1"]&&summary="<summary>$1</summary>\n\n"||summary=""echo"<details>\n\n${summary}\`\`\`console\n$(cat -)\n\`\`\`\n\n</details>"}

$echo"so\nlong\nlong\nlog\noutput" | gh-detail execution_log
<details><summary>execution_log</summary>

```console
so
long
long
long
output
``` #<- Qiita でのマークダウン表示のためのエスケープ
</details>$echo"so\nlong\nlong\nlog\noutput" | gh-detail execution_log | pbcopy
$