From c4e34b643c7f48e21d6078b7dde359d01171ca82 Mon Sep 17 00:00:00 2001
From: Tom Norris <D.Tom.Norris@gmail.com>
Date: Thu, 31 Aug 2023 23:35:15 -0700
Subject: [PATCH] Allowing for negation in tag search

---
 src/utils.ts | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

diff --git a/src/utils.ts b/src/utils.ts
index 4eb41e2..ce688ab 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -286,11 +286,29 @@ export const containsTags = async (file: TFile, tag: string, exclusive: boolean,
   
   for(let k = 0; k < filterTags.length; k++)
   {
+    let negate: boolean = false;
+    let tag = filterTags[k];
+    if(tag[0] == '-')
+    {
+      tag = tag.substring(1);
+      negate = true;
+    }
+
+    if(tag == "")
+    {
+      continue;
+    }
+
     let found: boolean = false;
     for(let i = 0; i < imgTags.length; i++)
     {
-      if(imgTags[i].contains(filterTags[k]))
+      if(imgTags[i].contains(tag))
       {
+        if(negate)
+        {
+          return false;
+        }
+
         if(!exclusive)
         {
           return true;
@@ -300,6 +318,11 @@ export const containsTags = async (file: TFile, tag: string, exclusive: boolean,
       }
     }
 
+    if(negate)
+    {
+      return true;
+    }
+
     if(!found && exclusive)
     {
       return false;