How to override PHP syntax coloring in VSCode Language

Question

I tried both including source.php after my match rule and injection into the PHP language syntax.

Including the source shows PHP syntax coloring without my override, whereas injection shows my override without PHP coloring.

Attempt	PHP Syntax	My Syntax Override
With Injection	❌	✅
Include PHP Source (source.php)	✅	❌

I would like to see both work at the same time where my syntax overrides the PHP syntax.

Any ideas what is happening or how to achieve this please?

My code setup:

# Language
"languages": [
    {
        "id": "phpf",
        "aliases": ["PHPF", "phpf"],
        "extensions": [".phpf"],
        "configuration": "./language-configuration.json",
        "icon": {
        "light": "file-icons/phpf.png",
        "dark": "file-icons/phpf.png"
        }
    }
]

# Grammar
"grammars": [
    {
        "language": "phpf",
        "scopeName": "source.phpf",
        "path": "./syntaxes/phpf.json",
        "injectTo": ["source.php"]
    }
]

# Syntax
{
    "scopeName": "source.phpf",
    "fileTypes": ["phpf"],
    "name": "PHPF",
    "injectionSelector": "L:source.php",
    "patterns": [
    {
        "name": "phpf.a",
        "match": "___[A-Z]+___"
    },
    {
        "include": "source.php"
    }
    ]
}

# Coloring
"configurationDefaults": {
    "editor.tokenColorCustomizations": {
        "textMateRules": [
        {
            "scope": "phpf.a",
            "settings": {
            "fontStyle": "bold",
            "foreground": "#e24d33"
            }
        }
        ]
    }
}

RedCMD · Accepted Answer · 2025-08-29 04:15:59Z

2

I think you're wanting to use "injections".
It will inject rules into your own grammar.
Heres the schema for it "$schema": "https://raw.githubusercontent.com/RedCMD/TmLanguage-Syntax-Highlighter/main/vscode.tmLanguage.schema.json"
Injections documentation

"injections": {
    "L:source.phpf -comment -string": {
        "patterns": [
            {
                "name": "phpf.a",
                "match": "___[A-Z]+___"
            }
        ]
    }
}

"injectionSelector" & "injectTo" is used when you want to inject your language into an existing language.
currently "injectTo": ["source.php"] is injecting your phpf into the existing php language.
making "include": "source.php" redundant.

answered Aug 29 at 4:15

RedCMD

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3 Comments

Z0q Aug 29 at 15:19

Awesome, it works! So I guess I had to use this "injections" with "pattern" you mentioned alongside the regular "patterns" including "source.php".

Z0q Aug 29 at 15:30

There is one issue though, it does override support.other.namespace.php (class name it extends from) but it does not override entity.name.type.class.php (the class name itself). It does work when I do not include source.php. Do you have any idea why maybe?

RedCMD Aug 30 at 1:35

you can only inject into a patterns array within the begin/end/while rules. prob need to inject into a higher scope and override the whole rule

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