Modified File Highlight

This plugin changes the Background of Windows that have Edited Buffers Open.

Why?

Ever wonder why your fix didn't work and then realize it's because you didn't save the file? Irritating

Screenshot

Requirements

• ~ Vim V7.3 (but unsure)
  • Don't know when getbufvar() Command was added
  • Used Sources to get a ballpark
• Note: Only Tested on My Windows 10 machine using vim 8.1 (Gvim, Powershell, Cmder)

Sources / Based on

• vim-diminactive
• vim-StatusLineHighlight

Install Guide

• Package way:
  • Download, then place into plugin folder
    • Mine is: ~/vimfiles/pack/plugin/start/
• vimrc way:
  • Open: modifiedfilehighlight.vim
  • Copy: s:ShowModifiedBufferStatus() -> augroup END
  • Paste in your vimrc
  • Note: Make a Copy of vimrc beforehand incase it hits the fan

Controls

• General
  • ModifiedFileHighlightOn = Global On
  • ModifiedFileHighlightOff = Global Off
• vimrc Options
  • let g:modifiedfilehighlight_ignore_no_name=0
    • Show for 'New Files'
    • Default set to 1, or don't
  • let g:modifiedfilehighlight_ignore='{REGEX}'
    • Ignore Files that match regex
    • Uses bufname() which pulls the path not just the name, so take that into account
    • Simple check with !empty(matchstr({filename}, {regex}))
      • Not empty, Skip it.

Changing Highlight ColorColumn

• Advice: Make it slightly different but noticeable+bearable

" My Settings (_vimrc)
" 
" Note: can conflict with cursorline

highlight ColorColumn guibg=#2f2f2f
highlight Normal guibg=#292824

Things to Do

• Add a better Ignore System
• Having a very long file open in two side-by-side vertical spilts, has lag. Look into possible solutions.
  • Not common from my use, but very annoying when it happens

How it Works

Mostly Notes for Myself

On Event: loop through all buffers on tab using tabpagebuflist(). If a Buffer's changed attribute is true, turn on all colorcolumns for that window, else turn all off

• Current Events:
  • TextChanged => Text Changed in Normal Mode
  • TextChangedI => Text Changed in Insert Mode
  • BufWinEnter => After a Buffer is Displayed
  • TabEnter => After Entering another Tab
  • BufWritePost => After Writing Buffer to File (save)
  • Also: OptionSet, if available, but above events are mainly what are called.

tabpagebuflist() My Understanding

" Buffers on tab
ex_tabpagebuflist = [2, 3, 4, 2]

" 2 => Buf 2, Window1
" 3 => Buf 3, Window2
" 4 => Buf 4, Window3
" 2 => Buf 2, Window4

" |-------------------------------|
" |    Window1    |    Window2    |
" |     buf2      |     buf3      |
" |               |               |
" |-------------------------------|
" |    Window3    |    Window4    |
" |     buf4      |     buf2      |
" |               |               |
" |-------------------------------|
"
" This is the general idea
"   I assume it depends on Open Order