Issues with rendering of custom Source Markers

[gadenbuie]

System details

RStudio Edition : Desktop [Open Source]
RStudio Version : 2023.3.0.14
OS Version      : OS X  12.5.1
R Version       : R version 3.6.3 (2020-02-29)

Steps to reproduce the problem

I think this is a regression; it was, at some point, possible to color and format source marker messages, but it no longer seems to be working as expected.

1. Run this script to create a test script. It will open another R script.

   tmpfile <- tempfile(fileext = ".R")
   
   writeLines(con = tmpfile,
   'foo <- cli::bg_br_white(cli::col_red("I am red!"))
   bar <- cli::bg_br_yellow(cli::col_cyan("I am cyan!"))
   
   markers <- list(
     list(
       type = "error",
       file = tmpfile,
       line = 6,
       column = 1,
       message = foo),
     list(
       type = "info", 
       file = tmpfile,
       line = 12,
       column = 1,
       message = bar))
   
   rstudioapi::sourceMarkers("Test Name", markers)
   '
   )
   
   file.edit(tmpfile)

2. Run the opened R script to create the custom source markers.

3. Problem: Observe that the markers do not appear in the current source file.

   

4. Click on a marker in the Markers pane. The file will open and the cursor will be on the line with the marker. Hover over the marker image.

   

5. Problem: The ANSI SGR colors of the marker text are escaped and appear in the message, rather than being applied to the message colors.

   

Describe the problem in detail

See above

Describe the behavior you expected

I was expecting messages to be colored as described in #10062.

[ronblum]

Verified in 2023.03.0-daily+312 on MacOS 13.2. The message is now displayed with the text in color instead of the escaped code.