How to delete multiple buffers in Vim?

Question

Assuming I have multiple files opened as buffers in Vim. The files have *.cpp, *.h and some are *.xml. I want to close all the XML files w

Answer 1

Try the script below. The example is for "txt", change it as needed, e.g. to "xml". Modified buffers are not deleted. Press \bd to delete the buffers.

map bd :bufdo call DeleteBufferByExtension("txt")

function!  DeleteBufferByExtension(strExt)
   if (matchstr(bufname("%"), ".".a:strExt."$") == ".".a:strExt )
      if (! &modified)
         bd
      endif
   endif
endfunction

[Edit] Same without :bufdo (as requested by Luc Hermitte, see comment below)

map bd :call DeleteBufferByExtension("txt")

function!  DeleteBufferByExtension(strExt)
   let s:bufNr = bufnr("$")
   while s:bufNr > 0
       if buflisted(s:bufNr)
           if (matchstr(bufname(s:bufNr), ".".a:strExt."$") == ".".a:strExt )
              if getbufvar(s:bufNr, '&modified') == 0
                 execute "bd ".s:bufNr
              endif
           endif
       endif
       let s:bufNr = s:bufNr-1
   endwhile
endfunction