- you just switched branch/rebased and the index is not up to date. - the project is large enough that the IDE can't cope. - you want to also match comments,

- you just switched branch/rebased and the index is not up to date. - the project is large enough that the IDE can't cope. - you want to also match comments, commented out code or in-project documentation - you want fuzzy search and match similarly named functions I use clangd integration in my IDE all the time, but often brute force is the right solution.