vim-patch:7.4.700

Problem:    Fold can't be opened after ":move". (Ein Brown)
Solution:   Delete the folding information and update it afterwards.
            (Christian Brabandt)

d5f6933d5c

src/nvim/ex_cmds.c

@@ -690,9 +690,17 @@ int do_move(linenr_T line1, linenr_T line2, linenr_T dest)
 {
   char_u      *str;
   linenr_T l;
-  linenr_T extra;           /* Num lines added before line1 */
-  linenr_T num_lines;       /* Num lines moved */
-  linenr_T last_line;       /* Last line in file after adding new text */
+  linenr_T extra;      // Num lines added before line1
+  linenr_T num_lines;  // Num lines moved
+  linenr_T last_line;  // Last line in file after adding new text
+
+  // Moving lines seems to corrupt the folds, delete folding info now
+  // and recreate it when finished.  Don't do this for manual folding, it
+  // would delete all folds.
+  bool isFolded = hasAnyFolding(curwin) && !foldmethodIsManual(curwin);
+  if (isFolded) {
+    deleteFoldRecurse(&curwin->w_folds);
+  }
 
   if (dest >= line1 && dest < line2) {
     EMSG(_("E134: Move lines into themselves"));
@@ -777,8 +785,14 @@ int do_move(linenr_T line1, linenr_T line2, linenr_T dest)
     if (dest > last_line + 1)
       dest = last_line + 1;
     changed_lines(line1, 0, dest, 0L);
-  } else
+  } else {
     changed_lines(dest + 1, 0, line1 + num_lines, 0L);
+  }
+
+  // recreate folds
+  if (isFolded) {
+    foldUpdateAll(curwin);
+  }
 
   return OK;
 }

src/nvim/fold.c

@@ -767,9 +767,9 @@ void foldUpdate(win_T *wp, linenr_T top, linenr_T bot)
     return;
   }
 
-  /* Mark all folds from top to bot as maybe-small. */
-  (void)foldFind(&curwin->w_folds, top, &fp);
-  while (fp < (fold_T *)curwin->w_folds.ga_data + curwin->w_folds.ga_len
+  // Mark all folds from top to bot as maybe-small.
+  (void)foldFind(&wp->w_folds, top, &fp);
+  while (fp < (fold_T *)wp->w_folds.ga_data + wp->w_folds.ga_len
          && fp->fd_top < bot) {
     fp->fd_small = MAYBE;
     ++fp;

src/nvim/testdir/test45.in

@@ -63,6 +63,16 @@ endfun
 :call append("$", foldlevel("."))
 :/^last/+1,$w! test.out
 :delfun Flvl
+:new
+iTest fdm=indent and :move bug END
+line2
+	Test fdm=indent START
+	line3
+	line4
+:set fdm=indent
+:1m1
+2jzc:m0
+:%w >> test.out
 :qa!
 ENDTEST
 

src/nvim/testdir/test45.ok

@@ -16,3 +16,8 @@ expr 2
 1
 2
 0
+	Test fdm=indent START
+	line3
+	line4
+Test fdm=indent and :move bug END
+line2

src/nvim/version.c

@@ -588,7 +588,7 @@ static int included_patches[] = {
   // 703 NA
   702,
   // 701 NA
-  // 700,
+  700,
   699,
   698,
   697,