.vimrc.func

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" RENAME CURRENT FILE
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function! RenameFile()
  let old_name = expand('%')
  let new_name = input('New file name: ', expand('%'), 'file')
  if new_name != '' && new_name != old_name
    exec ':saveas ' . new_name
    exec ':silent !rm ' . old_name
    redraw!
  endif
endfunction
map <Leader>n :call RenameFile()<cr>

" ==================================
" ==============*TABS*==============
" ==================================
"
:hi TabLineFill term=bold cterm=bold ctermbg=Black
:hi TabLine ctermfg=White ctermbg=Black
:hi TabLineSel ctermfg=Black ctermbg=Blue

set tabline=%!MyTabLine()  " custom tab pages line
function MyTabLine()
    let s = '' " complete tabline goes here
    " loop through each tab page
    for t in range(tabpagenr('$'))
        " set highlight
        if t + 1 == tabpagenr()
            let s .= '%#TabLineSel#'
        else
            let s .= '%#TabLine#'
        endif
        " set the tab page number (for mouse clicks)
        let s .= '%' . (t + 1) . 'T'
        let s .= ' '
        " set page number string
        let s .= t + 1 . ' '
        " get buffer names and statuses
        let n = ''      "temp string for buffer names while we loop and check buftype
        let m = 0       " &modified counter
        let bc = len(tabpagebuflist(t + 1))     "counter to avoid last ' '
        " loop through each buffer in a tab
        for b in tabpagebuflist(t + 1)
            " buffer types: quickfix gets a [Q], help gets [H]{base fname}
            " others get 1dir/2dir/3dir/fname shortened to 1/2/3/fname
            if getbufvar( b, "&buftype" ) == 'help'
                let n .= '[H]' . fnamemodify( bufname(b), ':t:s/.txt$//' )
            elseif getbufvar( b, "&buftype" ) == 'quickfix'
                let n .= '[Q]'
            else
                let n .= pathshorten(bufname(b))
            endif
            " check and ++ tab's &modified count
            if getbufvar( b, "&modified" )
                let m += 1
            endif
            " no final ' ' added...formatting looks better done later
            if bc > 1
                let n .= ' '
            endif
            let bc -= 1
        endfor
        " add modified label [n+] where n pages in tab are modified
        if m > 0
            let s .= '[' . m . '+]'
        endif
        " select the highlighting for the buffer names
        " my default highlighting only underlines the active tab
        " buffer names.
        if t + 1 == tabpagenr()
            let s .= '%#TabLineSel#'
        else
            let s .= '%#TabLine#'
        endif
        " add buffer names
        if n == ''
            let s.= '[New]'
        else
            let s .= n
        endif
        " switch to no underlining and add final space to buffer list
        let s .= ' '
    endfor
    " after the last tab fill with TabLineFill and reset tab page nr
    let s .= '%#TabLineFill#%T'
    " right-align the label to close the current tab page
    if tabpagenr('$') > 1
        let s .= '%=%#TabLineFill#%999Xclose'
    endif
    return s
endfunction