Update test advice a bit, remove note about urlchecker

MAINTENANCE.md

@@ -7,7 +7,16 @@ The state of cpp11 is pretty stable, it seems to have the features we need for m
 ### Running the cpp11test tests
 
 Most of the test suite is in a sub-package, cpp11test.
-Probably the best way to run these tests is to install the development version of cpp11 and then run `devtools::test()` to run the cpp11test test suite.
+The best way to run these tests is to install the development version of cpp11 after any change, and then run `devtools::test("./cpp11test")`.
+Precisely, this looks like:
+
+```r
+# Install dev cpp11, clean the cpp11test dll manually since it thinks nothing
+# has changed, then recompile and run its tests.
+devtools::install()
+devtools::clean_dll("./cpp11test")
+devtools::test("./cpp11test")
+```
 
 If tests failures occur the output from Catch isn't always easy to interpret.
 I have a branch of testthat https://github.com/jimhester/testthat/tree/catch-detailed-output that should make things easier to understand.
@@ -17,25 +26,6 @@ In addition getting a debugger to catch when errors happen can be fiddly when ru
 
 The GitHub Actions workflow has some additional logic to handle running the cpp11 tests https://github.com/r-lib/cpp11/blob/fd8ef97d006db847f7f17166cf52e1e0383b2d35/.github/workflows/R-CMD-check.yaml#L95-L102, https://github.com/r-lib/cpp11/blob/fd8ef97d006db847f7f17166cf52e1e0383b2d35/.github/workflows/R-CMD-check.yaml#L117-L124.
 
-### False positive URL checks for git repositories in the vignettes
-
-If you run `urlchecker::url_check()` on the repo you will see the following false positives.
-
-```
-! Warning: vignettes/motivations.Rmd:363:11 Moved
-git clone https://github.com/r-lib/cpp11.git
-          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-          https://github.com/r-lib/cpp11
-! Warning: vignettes/motivations.Rmd:354:11 Moved
-git clone https://github.com/RcppCore/Rcpp.git
-          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-          https://github.com/RcppCore/Rcpp
->
-```
-
-These only happen with the urlchecker package, they can be safely ignored and the real CRAN checks will not show them.
-
-
 ## Ensure you use `Sys.setenv("CPP11_EVAL" = "true"); devtools::submit_cran()` when submitting.
 
 If you forget to set `CPP_EVAL = "true"` then the vignette chunks will not run properly and the vignettes will not be rendered properly.