Add /whois SlashCommand to open UserInfo

src/SlashCommands.js

@@ -893,6 +893,26 @@ export const CommandMap = {
         },
         category: CommandCategories.advanced,
     }),
+
+    whois: new Command({
+        name: "whois",
+        description: _td("Displays information about a user"),
+        args: '<user-id>',
+        runFn: function(roomId, userId) {
+            if (!userId || !userId.startsWith("@") || !userId.includes(":")) {
+                return reject(this.getUsage());
+            }
+
+            const member = MatrixClientPeg.get().getRoom(roomId).getMember(userId);
+
+            dis.dispatch({
+                action: 'view_user',
+                member: member || {userId},
+            });
+            return success();
+        },
+        category: CommandCategories.advanced,
+    }),
 };
 /* eslint-enable babel/no-invalid-this */
 

src/i18n/strings/en_EN.json

@@ -204,6 +204,7 @@
     "Sends the given message coloured as a rainbow": "Sends the given message coloured as a rainbow",
     "Sends the given emote coloured as a rainbow": "Sends the given emote coloured as a rainbow",
     "Displays list of commands with usages and descriptions": "Displays list of commands with usages and descriptions",
+    "Displays information about a user": "Displays information about a user",
     "Reason": "Reason",
     "%(targetName)s accepted the invitation for %(displayName)s.": "%(targetName)s accepted the invitation for %(displayName)s.",
     "%(targetName)s accepted an invitation.": "%(targetName)s accepted an invitation.",