Fix equals being lost in SSH config value

This was causing issues with the header flag as those contain equal
signs.

Author: code-asher

src/sshSupport.test.ts

@@ -29,12 +29,14 @@ it("computes the config for a host", () => {
 Host coder-vscode--*
   StrictHostKeyChecking no
   Another=true
+  ProxyCommand=/tmp/coder --header="X-FOO=bar" coder.dev
 # --- END CODER VSCODE ---
 `,
   )
 
   expect(properties).toEqual({
     Another: "true",
     StrictHostKeyChecking: "yes",
+    ProxyCommand: '/tmp/coder --header="X-FOO=bar" coder.dev'
   })
 })

src/sshSupport.ts

@@ -52,7 +52,11 @@ export function computeSSHProperties(host: string, config: string): Record<strin
     if (line === "") {
       return
     }
-    const [key, ...valueParts] = line.split(/\s+|=/)
+    // The capture group here will include the captured portion in the array
+    // which we need to join them back up with their original values.  The first
+    // separate is ignored since it splits the key and value but is not part of
+    // the value itself.
+    const [key, _, ...valueParts] = line.split(/(\s+|=)/)
     if (key.startsWith("#")) {
       // Ignore comments!
       return
@@ -62,15 +66,15 @@ export function computeSSHProperties(host: string, config: string): Record<strin
         configs.push(currentConfig)
       }
       currentConfig = {
-        Host: valueParts.join(" "),
+        Host: valueParts.join(""),
         properties: {},
       }
       return
     }
     if (!currentConfig) {
       return
     }
-    currentConfig.properties[key] = valueParts.join(" ")
+    currentConfig.properties[key] = valueParts.join("")
   })
   if (currentConfig) {
     configs.push(currentConfig)