Positron wont run invalid syntax and won't highlight it either

[JosiahParry]

make_prop_table <- function(.x) {
  md <- .x |>
    select(-any_of(c("complexType", "values", "docsTags", "values"))) |>
    select(Name = name, Attribute = attr, Description = docs, Values = type, `Reflects to Attribute` = reflectToAttr) |>
    mutate(
      across(where(is.character), \(.x) gsub("\n", " ", .x)),
      across(where(is.character), \(.x) ifelse(grepl("\{|\}", .x), "Check API reference", .x))
    ) |>
    knitr::kable()

  md_tbl <- paste("#' ", md, collapse = "\n")

  sprintf(
    "#' ## Properties\n\n#' The following properties are provided by this component: \n\n%s",
    md_tbl
  )
}

This function has invalid syntax in the second across() function call. The grepl() needs to escape each brace twice instead of once (thanks for finding this chatgpt!). However there is no indication of this in the syntax highlighting in positron.

Positron won't execute this, though. So there's no good way to figure out where things are going awry.

Positron Version: 2025.02.0 (Universal) build 79
Code - OSS Version: 1.96.0
Commit: a268bc8
Date: 2025-01-21T02:44:54.581Z
Electron: 32.2.6
Chromium: 128.0.6613.186
Node.js: 20.18.1
V8: 12.8.374.38-electron.0
OS: Darwin arm64 24.0.0

[juliasilge]

Can you tell me a bit more about what you mean by "won't execute this"? If I copy this and paste into the console, I see an error that tells me about the brace:

[juliasilge]

Just to get super concrete, are you use the Cmd+Enter keyboard shortcut to send the current statement to the console?

[JosiahParry]

Correct!

[rmflight]

On my current version of Positron (2025.02.0 build 137) on Linux, R 4.4.1, Ctrl + Enter sends the function to the console, the console acts as if it is waiting for more input, and when I force it, by hitting Enter again in the console, I see the error that @juliasilge posted.

[JosiahParry]

@rmflight you can only do so if you click into the interpreter or press cmd + k, then f. Sending code to the console does not activate the console

[rmflight]

Might be something with the Mac or your version, but it definitely goes into the console for me with ctrl + enter, and then I hit ctrl + 2 to go to the console (Rstudio shortcuts enabled), and hit enter, and it does the error.

Screencast.from.02-13-2025.03.09.23.PM.webm

[juliasilge]

Thanks for the clarification! This is another example of #4594, where the console doesn't think the code is "complete" and so won't execute it yet; the console is waiting for you to keep typing and finish the statement.

I note in #4594 (comment) that the behavior in RStudio here feels more right, and we did some related work for Python in #2107.

[rmflight]

OK, yes, this seems to be the same type of issue, which is very annoying if you are editing in the middle of a larger function and it tries to eval all the way through several other functions. 😬