From c9c194934d9c633c56f1edfcf7e4de4b83cded0b Mon Sep 17 00:00:00 2001
From: Daniel Rizk <rizkytennis@gmail.com>
Date: Thu, 5 Sep 2024 19:21:42 -0400
Subject: [PATCH] add error message to linelist

---
 src/TidierFiles.jl | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/TidierFiles.jl b/src/TidierFiles.jl
index f9ac1c0..f75bc03 100644
--- a/src/TidierFiles.jl
+++ b/src/TidierFiles.jl
@@ -455,8 +455,12 @@ function list_files(path = "", pattern = "")
     files = map(walkdir(path)) do (root, dirs, files)
         joinpath.(root, files)
     end
-    files = reduce(vcat, files)
-    files = filter(x -> occursin(pattern, x), files)
+    if isempty(files)
+        error("No files ending with $pattern located at $path")
+    else
+        files = reduce(vcat, files)
+        files = filter(x -> occursin(pattern, x), files)
+    end
     return files
 end