Variable transformation doesn't work if undefined variables are used in the same snippet

[fuzy112]

Issue Type: Bug

Consider the following snippet:

{
  "Class": {
    "prefix": "myclass",
    "body": [
      "class ${TM_FILENAME_BASE/(^|_)([a-zA-Z0-9])/${2:/upcase}/g} : public ${BaseClass} {\n",
      "\t$0",
      "};\n"
    ]
  }
}

The transformation ${TM_FILENAME_BASE/(^|_)([a-zA-Z0-9])/${2:/upcase}/g} would normally remove the underscores and capitalize the filename, but in the snippet above, the file name is directly inserted without any transformation. However, after replacing ${BaseClass} with ${1:BaseClass},
the snippet works as expected.

VS Code version: Code 1.24.0 (6a6e02c, 2018-06-06T17:37:01.579Z)
OS version: Linux x64 4.16.14-300.fc28.x86_64

[jrieken]

@chingyat I actually cannot reproduce anymore... Can you give it a try with latest insiders please https://code.visualstudio.com/insiders/. We did make some changes in the variables world and this might have been fixed by that.

[fuzy112]

I tried the snippet above with insiders in file my_class.cpp.
It should inserts:

class MyClass : public BaseClass {

    
};

But it actually inserts:

class My_class : public BaseClass {

    
};

[jrieken]

Yeah, it looks like the /g-flag is getting lost