Implement case preservation in search as well

[roblourens]

In #9798 we implemented some support for preserving the match case while doing a find/replace. We need the same feature in search.

[skprabhanjan]

@roblourens , Can I work on this ?
If yes , Please help me understand what does same feature in search mean ( I understood the find/replace use case ).

[roblourens]

Yes that would be great @skprabhanjan! I want the same button that supports the same "preserve case" logic, but when using search in the side bar. Here is basically what you need to do:

The original PR is here: #60311

• Add the same button to the replace input that the find widget got
• Add plumbing for a "preserve case" option that goes along with the "is regex" and "whole word" and other options
• We compute the replace string for search here:

  vscode/src/vs/workbench/contrib/search/common/searchModel.ts

  Line 99 in ca2eb3b

  get replaceString(): string {

  and we need to take the "preserve case" option into consideration here too. So we need to use this same code:

  vscode/src/vs/editor/contrib/find/replacePattern.ts

  Lines 55 to 64 in ca2eb3b

  	if (matches[0].toUpperCase() === matches[0]) {
  	return this._state.staticValue.toUpperCase();
  	} else if (matches[0].toLowerCase() === matches[0]) {
  	return this._state.staticValue.toLowerCase();
  	} else if (containsUppercaseCharacter(matches[0][0])) {
  	return this._state.staticValue[0].toUpperCase() + this._state.staticValue.substr(1);
  	} else {
  	// we don't understand its pattern yet.
  	return this._state.staticValue;
  	}

  ideally copying it into a shared file so that find and search will use the same preserve case logic.

Should be relatively straightforward, let me know if that doesn't make sense.

[deitry]

Case preservation is a great feature.
Just to be clear: would it work with editor.action.addSelectionToNextFindMatch / addSelectionToPreviousFindMatch? I use this actions a lot through keybindings and hope this feature will be supported there too.

Upd. I didn't realized that you meant search sidebar. So I guess it should be another feature request.