From d43fa664894d61306c651a94ca69507aaa2c75e0 Mon Sep 17 00:00:00 2001
From: Tomas Babej <tomas@tbabej.com>
Date: Thu, 26 Nov 2020 23:48:56 -0500
Subject: [PATCH] CmdPurge: Detect the failure mode of trying to purge
 non-deleted tasks

Prompted by the failure mode described by Glen Solsberry in #2254.
---
 src/commands/CmdPurge.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/commands/CmdPurge.cpp b/src/commands/CmdPurge.cpp
index f78ae39c6..1ed01e662 100644
--- a/src/commands/CmdPurge.cpp
+++ b/src/commands/CmdPurge.cpp
@@ -135,6 +135,7 @@ int CmdPurge::execute (std::string&)
 {
   int rc = 0;
   int count = 0;
+  bool matched_deleted = false;
 
   Filter filter;
   std::vector <Task> filtered;
@@ -156,6 +157,9 @@ int CmdPurge::execute (std::string&)
     // mark tasks as deleted before purging.
     if (task.getStatus () == Task::deleted)
     {
+      // Mark that at least one deleted task matched the filter
+      matched_deleted = true;
+
       std::string question;
       question = format ("Permanently remove task {1} '{2}'?",
                          task.identifier (true),
@@ -166,6 +170,9 @@ int CmdPurge::execute (std::string&)
     }
   }
 
+  if (filtered.size () > 0 and ! matched_deleted)
+    Context::getContext ().footnote ("No deleted tasks specified. Maybe you forgot to delete tasks first?");
+
   feedback_affected (count == 1 ? "Purged {1} task." : "Purged {1} tasks.", count);
   return rc;
 }