5 files changed, 46 insertions, 3 deletions
diff --git a/indra/llui/llurlaction.cpp b/indra/llui/llurlaction.cpp
index b6b450c2a1..d017f536f0 100644
--- a/indra/llui/llurlaction.cpp
+++ b/indra/llui/llurlaction.cpp
@@ -142,6 +142,16 @@ void LLUrlAction::copyLabelToClipboard(std::string url)
     }
 }
 
+std::string LLUrlAction::getURLLabel(std::string url)
+{
+    LLUrlMatch match;
+    if (LLUrlRegistry::instance().findUrl(url, match))
+    {
+       return match.getLabel();
+    }
+    return "";
+}
+
 void LLUrlAction::showProfile(std::string url)
 {
     // Get id from 'secondlife:///app/{cmd}/{id}/{action}'
diff --git a/indra/llui/llurlaction.h b/indra/llui/llurlaction.h
index ac9741a7ad..6fb14f26b4 100644
--- a/indra/llui/llurlaction.h
+++ b/indra/llui/llurlaction.h
@@ -72,6 +72,8 @@ public:
     /// copy a Url to the clipboard
     static void copyURLToClipboard(std::string url);
 
+    static std::string getURLLabel(std::string url);
+
     /// if the Url specifies an SL command in the form like 'app/{cmd}/{id}/*', show its profile
     static void showProfile(std::string url);
     static std::string getUserID(std::string url);
diff --git a/indra/llui/llurlentry.cpp b/indra/llui/llurlentry.cpp
index bcd13b7f0b..ce6595965a 100644
--- a/indra/llui/llurlentry.cpp
+++ b/indra/llui/llurlentry.cpp
@@ -42,8 +42,6 @@
 #include "message.h"
 #include "llexperiencecache.h"
 
-#define APP_HEADER_REGEX "((x-grid-location-info://[-\\w\\.]+/app)|(secondlife:///app))"
-
 // Utility functions
 std::string localize_slapp_label(const std::string& url, const std::string& full_name);
 
diff --git a/indra/llui/llurlentry.h b/indra/llui/llurlentry.h
index 6e7d2fc80f..36128b0391 100644
--- a/indra/llui/llurlentry.h
+++ b/indra/llui/llurlentry.h
@@ -42,6 +42,8 @@
 
 class LLAvatarName;
 
+#define APP_HEADER_REGEX "((x-grid-location-info://[-\\w\\.]+/app)|(secondlife:///app))"
+
 typedef boost::signals2::signal<void (const std::string& url,
                                       const std::string& label,
                                       const std::string& icon)> LLUrlLabelSignal;
diff --git a/indra/newview/lllogchat.cpp b/indra/newview/lllogchat.cpp
index fbf4a7d1dd..76d3c8cea2 100644
--- a/indra/newview/lllogchat.cpp
+++ b/indra/newview/lllogchat.cpp
@@ -32,6 +32,8 @@
 #include "lllogchat.h"
 #include "llregex.h"
 #include "lltrans.h"
+#include "llurlaction.h"
+#include "llurlentry.h"
 #include "llviewercontrol.h"
 
 #include "lldiriterator.h"
@@ -358,13 +360,29 @@ void LLLogChat::saveHistory(const std::string& filename,
         return;
     }
 
+    std::string altered_line = line;
+
+    // avoid costly regex calls
+    if (line.find("/mention") != std::string::npos)
+    {
+        static const boost::regex mention_regex(APP_HEADER_REGEX "/agent/[\\da-f-]+/mention", boost::regex::perl | boost::regex::icase);
+
+        // replace mention URL with [@username](URL)
+        altered_line = boost::regex_replace(line, mention_regex, [](const boost::smatch& match) -> std::string
+        {
+            std::string url = match[0].str();
+            std::string username = LLUrlAction::getURLLabel(url);
+            return "[" + username + "](" + url + ")";
+        });
+    }
+
     LLSD item;
 
     if (gSavedPerAccountSettings.getBOOL("LogTimestamp"))
          item["time"] = LLLogChat::timestamp2LogString(0, gSavedPerAccountSettings.getBOOL("LogTimestampDate"));
 
     item["from_id"] = from_id;
-    item["message"] = line;
+    item["message"] = altered_line;
 
     //adding "Second Life:" for all system messages to make chat log history parsing more reliable
     if (from.empty() && from_id.isNull())
@@ -470,6 +488,19 @@ void LLLogChat::loadChatHistory(const std::string& file_name, std::list<LLSD>& m
 
         std::string line(remove_utf8_bom(buffer));
 
+
+        // fast heuristic test for a mention URL in a string
+        // this is used to avoid costly regex calls
+        if (line.find("/mention)") != std::string::npos)
+        {
+            // restore original mention URL from [@username](URL) format
+            static const boost::regex altered_mention_regex("\\[@([^\\]]+)\\]\\((" APP_HEADER_REGEX "/agent/[\\da-f-]+/mention)\\)",
+                                                            boost::regex::perl | boost::regex::icase);
+
+            // $2 captures the URL part
+            line = boost::regex_replace(line, altered_mention_regex, "$2");
+        }
+
         //updated 1.23 plain text log format requires a space added before subsequent lines in a multilined message
         if (' ' == line[0])
         {