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tools/vim/README.txt

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+Vim syntax highlighting for Fasto.
+Created by Oleksandr Shturmov <oleks@oleks.info> on November 1, 2014.
+
+To install:
+
+1. Copy fasto.vim into your ~/.vim/syntax/ (create the directory if it doesn't
+already exist).
+
+2. Add the following line to your ~/.vimrc. This will make sure that any .fo
+file is recognised as a fasto file. It is important that fasto.vim is present
+in ~/.vim/syntax/ for syntax highlighting to work.
+
+au BufNewFile,BufRead *.fo setlocal ft=fasto

tools/vim/fasto.vim

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+" Vim syntax file for Fasto.
+" Created by Oleksandr Shturmov <oleks@oleks.info> on November 1, 2014.
+
+if exists("b:current_syntax")
+  finish
+end
+
+syn keyword fastoKeyword fun fn op if then else let in
+syn keyword fastoType int char bool
+syn keyword fastoFunction read write iota replicate map reduce scan
+
+syn match fastoString "\"\([ -!#-&(-[\]-~]\|\\[\x0-\x7f]\)*\""
+
+syn match fastoComment "//.*$"
+
+highlight link fastoKeyword Keyword
+highlight link fastoType Type
+highlight link fastoFunction Function
+
+highlight link fastoString String
+
+highlight link fastoComment Comment