1 files changed, 17 insertions, 0 deletions
diff --git a/autoload/diff/prune.vim b/autoload/diff/prune.vim
new file mode 100644
index 0000000..cb4f410
--- /dev/null
+++ b/autoload/diff/prune.vim
@@ -0,0 +1,17 @@
+" Undo some diff lines
+function diff#prune#Prune(type) abort
+
+  " Choose appropriate line ranges depending on mode
+  if a:type =~# "^[vV\<C-V>]$"
+    let l:range = '''<,''>'
+  else
+    let l:range = '''[,'']'
+  endif
+
+  " Reinstate removals and remove addenda; preserve search pattern
+  let l:search_save = @/
+  silent execute l:range.'substitute/^-/ /e'
+  silent execute l:range.'global/^+/d'
+  let @/ = l:search_save
+
+endfunction