[clang] [clang][analyzer] Support 'getdelim' and 'getline' in StreamChecker (PR #78693)

[Ben Shi via cfe-commits]

benshi001 wrote:

> I have already a working code to simplify code repetitions, but want to merge first patches #76979 and #78180 (@NagyDonat could you look at these too?).

How about merge this patch first, then apply your simplification one? Since my current one also is affected.

https://github.com/llvm/llvm-project/pull/78693