posit-dev · lionel- · Jul 30, 2026 · Jul 30, 2026 · Jul 31, 2026 · Jul 31, 2026
diff --git a/extensions/positron-r/ark b/extensions/positron-r/ark
diff --git a/extensions/positron-r/package.json b/extensions/positron-r/package.json
@@ -229,6 +229,11 @@
             "default": true,
             "description": "%r.configuration.diagnostics.enable.description%"
           },
+          "oak.sourceFetching.enabled": {
+            "type": "boolean",
+            "default": true,
+            "markdownDescription": "%r.configuration.oak.sourceFetching.enabled.description%"
+          },
           "positron.r.symbols.includeAssignmentsInBlocks": {
             "type": "boolean",
             "default": false,

diff --git a/extensions/positron-r/package.nls.json b/extensions/positron-r/package.nls.json
@@ -80,6 +80,7 @@
 	"r.configuration.pipe.native.description": "Native pipe available in R >= 4.1",
 	"r.configuration.pipe.magrittr.description": "Pipe operator from the magrittr package, re-exported by many other packages",
 	"r.configuration.diagnostics.enable.description": "Enable R diagnostics globally",
+	"r.configuration.oak.sourceFetching.enabled.description": "Recover the R sources of the packages your workspace uses, for intellisense and code navigation. Sources come from your local installation when available, and are otherwise downloaded from CRAN and cached on disk.",
 	"r.configuration.symbols.includeAssignmentsInBlocks.description": "Controls whether assigned objects inside `{}` blocks are included as document symbols, in addition to top-level assignments. Reopen files or restart the server for the setting to take effect.",
 	"r.configuration.workspaceSymbols.includeCommentSections.description": "Controls whether comment sections like `# My section ---` are included as workspace symbols.",
 	"r.configuration.autoConvertFilePaths.description": "Automatically convert file paths when pasting files from file manager into R scripts. Converts backslashes (\\) to forward slashes (/), adds quotes, and formats multiple files as R vectors.",
+4 −0		crates/ark/src/console/console_repl.rs
+31 −13		crates/ark/src/dap/dap_jupyter_handler.rs
+49 −22		crates/ark/src/dap/dap_server.rs
+1 −0		crates/ark/src/lib.rs
+23 −7		crates/ark/src/lsp/completions/completion_item.rs
+2 −3		crates/ark/src/lsp/completions/sources/composite/pipe.rs
+2 −3		crates/ark/src/lsp/completions/sources/composite/subset.rs
+44 −47		crates/ark/src/lsp/completions/sources/unique/extractor.rs
+24 −4		crates/ark/src/lsp/completions/sources/unique/subset.rs
+52 −43		crates/ark/src/lsp/completions/sources/utils.rs
+50 −0		crates/ark/src/lsp/config.rs
+44 −0		crates/ark/src/lsp/diagnostics.rs
+0 −69		crates/ark/src/lsp/handlers.rs
+20 −1		crates/ark/src/lsp/main_loop.rs
+39 −0		crates/ark/src/lsp/sources.rs
+5 −2		crates/ark/src/lsp/state.rs
+129 −13		crates/ark/src/lsp/state_handlers.rs
+8 −7		crates/ark/src/lsp/tests/goto_definition.rs
+4 −2		crates/ark/src/lsp/tests/main_loop.rs
+309 −7		crates/ark/src/lsp/tests/sources.rs
+30 −0		crates/ark/src/lsp/tests/utils/events.rs
+23 −0		crates/ark/src/lsp/tests/utils/mod.rs
+8 −7		crates/ark/src/r_task.rs
+153 −0		crates/ark/src/timeout.rs
+36 −0		crates/ark/tests/integration/dap_evaluate.rs
+171 −0		crates/ark/tests/integration/dap_notebook.rs
+21 −4		crates/ark_test/src/lsp_client.rs
+78 −0		crates/stdext/src/env.rs
+4 −0		crates/stdext/src/lib.rs
+67 −0		doc/configuration-oak.md