Hiralo added inline comments.

================
Comment at: clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp:320-324
+    if (!Checks.empty()) {
+      llvm::errs() << "Error: --config-file and --checks are mutually "
+                      "exclusive. Specify only one.\n";
+      return nullptr;
+    }
----------------
DmitryPolukhin wrote:
> DmitryPolukhin wrote:
> > njames93 wrote:
> > > I disagree with this check here, `Config` is not mutually exclusive with 
> > > `Checks`, `Checks` gets applied atop of `Config`. So the same should 
> > > happen when using `ConfigFile` with `Checks`
> > +1
> Clarify: +1 to @njames93 that we don't need this check.
> I disagree with this check here, `Config` is not mutually exclusive with 
> `Checks`, `Checks` gets applied atop of `Config`. So the same should happen 
> when using `ConfigFile` with `Checks`

ok, will remove these two checks :)


================
Comment at: clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp:337
+
+    Config.assign((*Text)->getBuffer());
+  }
----------------
Hiralo wrote:
> DmitryPolukhin wrote:
> > DmitryPolukhin wrote:
> > > I suggest creating new local variable with text of the config from 
> > > `Config` or `ConfigFile` file content i.e. avoid modifying `Config` 
> > > itself.
> > It doesn't compile and using local variable instead of changing command 
> > line option will make this code easier to read and understand:
> > ```
> > clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp:334:12: error: no 
> > matching member function for call to 'assign'
> >     Config.assign((*Text)->getBuffer());
> >     ~~~~~~~^~~~~~
> > ```
> > Could you please fix build and please upload diff with `arc diff` as 
> > @njames93 suggested so buildbot can test your changes?
> > I suggest creating new local variable with text of the config from `Config` 
> > or `ConfigFile` file content i.e. avoid modifying `Config` itself.
> 
> Sorry! probably I missed this comment!
> 
> std::string Temp = (*Text)->getBuffer();
> Config.assign(Temp); // ???
> 
> if so how code will enter into below block... because we want to reuse 
> code-path of 'Config' correct?
> 
> if (!Config.empty()) {
>  if (llvm::ErrorOr<ClangTidyOptions> ParsedConfig = 
> parseConfiguration(Config)) {
> ...
> }
> 
> ?
> It doesn't compile and using local variable instead of changing command line 
> option will make this code easier to read and understand:
> ```
> clang-tools-extra/clang-tidy/tool/ClangTidyMain.cpp:334:12: error: no 
> matching member function for call to 'assign'
>     Config.assign((*Text)->getBuffer());
>     ~~~~~~~^~~~~~
> ```
> Could you please fix build and please upload diff with `arc diff` as 
> @njames93 suggested so buildbot can test your changes?

Let me try.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89936/new/

https://reviews.llvm.org/D89936

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