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Is there any bash command so that we can extract the content of OUTLINE or AL OUTLINE section of the VS Code and write the same into some text document ?

Answers

If you don't get a better answer, you can try the Show Functions extension.

It can produce an output of a (clickable) list of functions and symbols into a separate editor which you can then Ctrl-A to copy and paste.

You don't say what languages you are using, I use the following for .js files:

"funcList": {
    "doubleSpacing": true,
    "filters": [
      {
        "extensions": [
          ".js"
        ],
        "native": "/^[a-z]+\\s+\\w+\\s*\\(.*\\)/mgi",
        "display": "/\\S* +(\\w+\\s*\\(.*\\))/1",
        "sort": 0
      }
    ]
}

which captures and displays the function name and args like:

loadCountryTaxonomy(country)

toggleSearchResultsPanel()

updatetaxArticleQueries(data)

but you can modify the regex to your requirements. I don't try to list symbols other than functions but apparently you can with this extension.