How to change RStudio display language into English

kevinushey · December 6, 2019, 7:50pm

RStudio does not read this file during launch. You can see how R's own GUI uses this file during launch:

wch/r-source/blob/bfe73ecd848198cb9b68427cec7e70c40f96bd72/src/gnuwin32/rui.c#L820-L824


      
              if(strlen(gui.language)) {
          	char *buf = malloc(50);
          	snprintf(buf, 50, "LANGUAGE=%s", gui.language);
          	putenv(buf);
              }

In theory, ensuring that the LANGUAGE=en environment variable is set should ensure R uses English messages for output, but I have not been able to verify that this is the case.