Allow to ignore specific words

[moshfeu]

A feature request is to have a set of strings to ignore.
For example, setting ignore_strings [ "dev","staging","prod"] would assist with comparing code between configuration files dev, staging, and prod folders.

Source: https://marketplace.visualstudio.com/items?itemName=moshfeu.compare-folders&ssr=false#review-details

[moshfeu]

It may be possible to consider 2 files as identical if the only differences are strings in the ignore_strings. It won't be possible to not highlighting them in the diff view if there are more differences in these files.

So, if the only differences are the strings in the ignore_strings, the files would appear in the "identical" view and not in the "differences" but if there are more differences, the strings in the ignore_strings will be highlighted alongside the other differences.

Why? because the diff view is vscode's built in and I don't know a way to ask it not to highlight a difference

What do you think @markklemm?

[moshfeu]

@gliviu what do you think? Does it make sense to add this option to the dir-compare or is it better vscode-compare-folders extension to implement it as a compareFileSync handler? If the second option, is it possible to somehow adding a hook into the lineBasedCompareSync so consumers won't have to handle the side effects, the concurrent files reading etc.?
By hook I mean to allow consumer to enrich the lines comparing here, something like

function compareLine(options: Options, line1: string, line2: string, options: Options): boolean {
    if (options.ignoreLineEnding) {
        line1 = trimLineEnding(line1)
        line2 = trimLineEnding(line2)
    }
    if (options.ignoreWhiteSpaces) {
        line1 = trimSpaces(line1)
        line2 = trimSpaces(line2)
    }
    if (options.ignoreAllWhiteSpaces) {
        line1 = removeSpaces(line1)
        line2 = removeSpaces(line2)
    }
    return line1 === line2 || options.customLineComparer(line1, line2);
}