SublimeText3 - Repair bad indentation

repair-indent

// required plugin: https://github.com/jisaacks/ChainOfCommand

// Preferences > Key Bindings - User
[ 
    { "keys": ["alt+shift+r"], 
        "command": "chain",
        "args": {
            "commands": [
                ["unindent", {
                    "context": [
                        { 
                            "key": "preceding_text", 
                            "operator": "regex_match", 
                            "operand": "^[\t ]*", 
                            "match_all": true 
                        }
                    ]
                }],
                ["reindent"]
            ]
        }
    }
]