Description
The R terminal starts correctly inside VS Code and all basic functionality appears to work (code execution, languageserver, httpgd, plotting, etc.), but the Session Watcher never attaches.
The status bar always shows:
Clicking it attempts to execute:
which fails with
Error in .vsc.attach() :
could not find function ".vsc.attach"
As a consequence, the Global Environment pane never updates.
Environment
OS:
Windows 11 x64
VS Code:
1.128.0
Extension:
REditorSupport.r 2.8.8
R:
4.6.1 ("Happy Hop")
Console:
Radian 0.6.16
languageserver:
0.3.18
httpgd:
2.1.4
R terminal configuration
settings.json
{
"r.rterm.windows": "C:\\Users\\davellb\\AppData\\Local\\Python\\pythoncore-3.14-64\\Scripts\\radian.exe",
"r.rterm.option": [
"--no-save",
"--no-restore"
],
"r.bracketedPaste": true,
"r.sessionWatcher": true,
"r.alwaysUseActiveTerminal": true
}
What works
R terminal starts normally
Radian starts correctly
Code execution works
Plotting works
languageserver works
httpgd works
Objects exist in the R session
Example:
example <- 123
ls()
[1] "example"
What does not work
The session never becomes attached.
The status bar always remains
R: (not attached)
The Global Environment pane stays empty.
Clicking the status bar executes
.vsc.attach()
which returns
Error in .vsc.attach() :
could not find function ".vsc.attach"
Diagnostics
The VS Code environment variables are present.
Sys.getenv("TERM_PROGRAM")
returns
vscode
interactive()
returns
TRUE
Sys.getenv("VSCODE_INIT_R")
points to
C:\\Users\\davellb\\.vscode\\extensions\\reditorsupport.r-2.8.8\\R\\session\\init.R
The startup hook appears to be installed correctly.
identical(.First.sys, base::.First.sys)
returns
FALSE
Printing .First.sys shows the VS Code replacement function, including
exports$.vsc.attach()
However,
search()
never contains
tools:vscode
and
exists(".vsc.attach")
returns
FALSE
Additional information
I also created
C:\Users\<user>\.Rprofile
containing
if (interactive() && Sys.getenv("RSTUDIO") == "") {
source(file.path(
Sys.getenv("USERPROFILE"),
".vscode-R",
"init.R"
))
}
The file is sourced successfully, but the behavior does not change.
It appears that .First.sys is successfully replaced, but the Session Watcher never completes initialization and .vsc.attach is never exported.
Description
The R terminal starts correctly inside VS Code and all basic functionality appears to work (code execution, languageserver, httpgd, plotting, etc.), but the Session Watcher never attaches.
The status bar always shows:
Clicking it attempts to execute:
which fails with
As a consequence, the Global Environment pane never updates.
Environment
OS:
Windows 11 x64
VS Code:
1.128.0
Extension:
REditorSupport.r 2.8.8
R:
4.6.1 ("Happy Hop")
Console:
Radian 0.6.16
languageserver:
0.3.18
httpgd:
2.1.4
R terminal configuration
settings.json
{ "r.rterm.windows": "C:\\Users\\davellb\\AppData\\Local\\Python\\pythoncore-3.14-64\\Scripts\\radian.exe", "r.rterm.option": [ "--no-save", "--no-restore" ], "r.bracketedPaste": true, "r.sessionWatcher": true, "r.alwaysUseActiveTerminal": true } What works R terminal starts normally Radian starts correctly Code execution works Plotting works languageserver works httpgd works Objects exist in the R session Example: example <- 123 ls() [1] "example" What does not work The session never becomes attached. The status bar always remains R: (not attached) The Global Environment pane stays empty. Clicking the status bar executes .vsc.attach() which returns Error in .vsc.attach() : could not find function ".vsc.attach" Diagnostics The VS Code environment variables are present. Sys.getenv("TERM_PROGRAM") returns vscode interactive() returns TRUE Sys.getenv("VSCODE_INIT_R") points to C:\\Users\\davellb\\.vscode\\extensions\\reditorsupport.r-2.8.8\\R\\session\\init.R The startup hook appears to be installed correctly. identical(.First.sys, base::.First.sys) returns FALSE Printing .First.sys shows the VS Code replacement function, including exports$.vsc.attach() However, search() never contains tools:vscode and exists(".vsc.attach") returns FALSE Additional information I also created C:\Users\<user>\.Rprofile containing if (interactive() && Sys.getenv("RSTUDIO") == "") { source(file.path( Sys.getenv("USERPROFILE"), ".vscode-R", "init.R" )) } The file is sourced successfully, but the behavior does not change. It appears that .First.sys is successfully replaced, but the Session Watcher never completes initialization and .vsc.attach is never exported.