feat: Add 'R' support

Author: andrewferrier

README.md

@@ -31,6 +31,7 @@ navigation and the ability to output variable values.
 *   `php`
 *   `ps1` (Powershell)
 *   `python`
+*   `r`
 *   `ruby`
 *   `rust`
 *   `sh` (Sh/Bash)
@@ -299,6 +300,7 @@ If it helps to understand these, you can look at the built-in configurations in
 | PHP                                                                 | :+1:              | :+1:                                                               | :x:                                                       | :+1:                                                                 | :x:                                                 | :x:                                               | :x:                                                   |
 | Powershell/ps1                                                      | :+1:              | :x:                                                                | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |
 | Python                                                              | :+1:              | :+1:                                                               | :+1:                                                      | :+1:                                                                 | :+1:                                                | :x:                                               | :x:                                                   |
+| R                                                                   | :+1:              | :x:                                                                | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |
 | Ruby                                                                | :+1:              | :+1:                                                               | :x:                                                       | :+1:                                                                 | :x:                                                 | :x:                                               | :x:                                                   |
 | Rust                                                                | :+1:              | :+1:                                                               | :+1:                                                      | :x:                                                                  | :+1:                                                | :x:                                               | :x:                                                   |
 | Swift                                                               | :+1:              | :x:                                                                | :x:                                                       | :x:                                                                  | :x:                                                 | :x:                                               | :x:                                                   |

lua/debugprint/filetypes.lua

@@ -124,6 +124,12 @@ return {
         mid_var = "{",
         right_var = '}")',
     },
+    ["r"] = {
+        left = 'cat(paste("',
+        right = '"), file=stderr())',
+        mid_var = '", ',
+        right_var = "), file=stderr())",
+    },
     ["ruby"] = {
         left = 'STDERR.puts "',
         right = '"',