Add support for querying file contents

[csrgxtu]

what if i want to find which file contains the specific string? just like in IDE.

[kashav]

Hey @csrgxtu, just saw this, sorry about the delayed response.

That's a great idea! Do you have a proposed syntax? How do you feel about

>>> ... WHERE file CONTAINS '...';

[kashav]

Work for this has begun on the feat/query-file-contents branch.

[AlexanderYastrebov]

Another option is to support -exec command ; from find utility

[AlexanderYastrebov]

Also it seems that all operators from name attribute are applicable to file content so syntax (and implementation) actually may be the same