https://marketplace.visualstudio.com/items?itemName=fuzzylife.character
Count Specific Character(s) in Selected Text
npx --package yo --package generator-code -- yo code #git clone https://github.com/animesh/vscode-selected-character-count
cd vscode-selected-character-count
npm run compile
ctr-shift-P / >count
so far counts occurence of characer ">" representing number of sequences in open Fasta file format
https://code.visualstudio.com/api/working-with-extensions/publishing-extension
npm install -g @vscode/vsce
cd vscode-selected-character-count
vsce package
vsce login fuzzylife #token https://fuzzylife.visualstudio.com/_usersSettings/tokens
vsce publish