sub.tmLanguage.json

{
    "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
    "name": "EPICS substitution files syntax",
    "scopeName": "source.epics.sub",    
    "patterns": [
        {
            "include": "#keywords"
        },
        {
            "include": "#strings"
        },
        {
            "include": "#filename"
        },
        {
            "include": "#macros"
        },
        {
            "include": "#comments"
        }
    ],
    "repository": {
        "keywords": {
            "patterns": [
                {
                    "name": "keyword.control.epics",
                    "match": "\\b(file)\\b"
                },
                {
                    "name": "constant.character.epics",
                    "match": "\\b(pattern)\\b"
                }
            ]
        },
        "strings": {
            "name": "string.quoted.double.epics",
            "begin": "\"",
            "end": "\"",
            "patterns": [
                {
                    "name": "constant.character.escape.epics",
                    "match": "\\\\."
                }
            ]
        },
        "filename": {
            "patterns": [{
                "name": "entity.name.type.epics",
                "match": "(\\w+)(.template)"
            }]
        },
        "macros": {
            "patterns": [{
                "name": "variable.parameter",
                "match": "\\b(\\S\\w+)\\b"
            }]
        },
        "comments": {
            "name":"comment.line.number-sign.epics",
            "begin": "#",
            "end": "^",
            "patterns": [
                {
                    "name":"constant.character.escape.epics",
                    "match": "\\\\."
                }
            ]
        }
    }
}