.

linuxconf/files/vim/syntax/flow.vim

+" syntax/flow.vim
+
+if exists("b:current_syntax")
+  finish
+endif
+
+syntax clear
+
+" Level 1 tags (0-space indent, ends with :)
+syntax match FlowLevel1 /^\S.*: *$/
+
+" Level 2 tags (2-space indent, ends with :)
+syntax match FlowLevel2 /^  \S.*: *$/
+
+" Level 3 args (4-space indent)
+syntax match FlowLevel3 /^    .*$/ 
+
+" Multi-line block: starts on a non-space line not ending with ':'
+" ends just before the next level-1 or level-2 tag
+syntax region FlowMultiline start=/^\S.*[^:]$/ end=/^\(\S.*: *$\|  \S.*: *$\)/me=s-1 keepend contains=NONE
+
+" Highlight links
+highlight def link FlowLevel1 Statement
+highlight def link FlowLevel2 String
+highlight def link FlowLevel3 Identifier
+highlight FlowMultiline guifg=#888888 ctermfg=8
+
+let b:current_syntax = "flow"
+

linuxconf/files/vim/syntax/flow.vim.broken

+" syntax/flow.vim
+
+if exists("b:current_syntax")
+  finish
+endif
+
+syntax clear
+
+" Level 1 tags (0 space, ends with :)
+syntax match FlowLevel1 /^\S.*: *$/
+
+" Level 2 tags (2 spaces, ends with :)
+syntax match FlowLevel2 /^  \S.*: *$/
+
+" Level 3 args (4-space indent, no colon)
+syntax match FlowLevel3 /^    .*/ contains=FlowArg1,FlowArg2,FlowArg3
+
+" Round-robin word highlight in level 3
+syntax match FlowArg1 /\%(^    \)\@<=\S\+/ contained
+syntax match FlowArg2 /\%(^    \S\+\s\+\)\@<=\S\+/ contained
+syntax match FlowArg3 /\%(^    \S\+\s\+\S\+\s\+\)\@<=\S\+/ contained
+
+" Multi-line block: starts on non-space line not ending with ':', ends before next label
+syntax region FlowMultiline start=/^\S.*[^:]$/ end=/^\(\S.*: *$\|  \S.*: *$\)/me=s-1 contains=NONE keepend
+
+" Highlights
+highlight def link FlowLevel1 Statement
+highlight def link FlowLevel2 String
+
+highlight def link FlowArg1 Identifier
+highlight def link FlowArg2 Type
+highlight def link FlowArg3 Constant
+
+highlight FlowMultiline guifg=#888888 ctermfg=8
+
+let b:current_syntax = "flow"
+

linuxconf/files/vimrc

@@ -39,6 +39,8 @@ set hlsearch
 map <C-f> viwyk/<C-r>"<CR>
 set mouse=
 
+" my private flow file format
+au BufRead,BufNewFile *.flow set filetype=flow
 
 
 " """""""""""""""""""""" BEGIN edit GPG file """"""""""""""""""""""""""""""