Node Wrangler cannot import textures with only one letter in the end of the texture's name

Hello!
I use Node Wrangler addon and the shortcut Ctrl+Shift+T for quick importing textures in nodetree.
It uses “tags” in the end of the name of the texture, for example Car_diff.png
But I usually use only one letter in my naming rules, for example Car_C.png for base color, Car_M.png for metallic, Car_R.png for roughness etc. But when I add this tags in Node Wrangler addon’s settings, it doesn’t work. There are massage in the bottom “No matching images found”.
Is there a way to use one letter in names or can I somehow send my massage to the devs?
Thanks!

Hmm… just tested it…:

You may also look/ask here (even if the original authot isn’t maintaining this anymore… but there are users…):

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Wow, it turns out that the thing was that I used capital letters (R, C, M etc…), and I had to write tags in small letters (r, c, m) in addon settings. Interesting