Added qfdo

init/qfdo.vim

@@ -0,0 +1,27 @@
+command! -nargs=+ QFDo call QFDo(<q-args>)
+
+" Function that does the work
+function! QFDo(command)
+    " Create a dictionary so that we can
+    " get the list of buffers rather than the
+    " list of lines in buffers (easy way
+    " to get unique entries)
+    let buffer_numbers = {}
+    " For each entry, use the buffer number as
+    " a dictionary key (won't get repeats)
+    for fixlist_entry in getqflist()
+        let buffer_numbers[fixlist_entry['bufnr']] = 1
+    endfor
+    " Make it into a list as it seems cleaner
+    let buffer_number_list = keys(buffer_numbers)
+
+    " For each buffer
+    for num in buffer_number_list
+        " Select the buffer
+        exe 'buffer' num
+        " Run the command that's passed as an argument
+        exe a:command
+        " Save if necessary
+        update
+    endfor
+endfunction