vim-patch:8.1.0999: use register one too often and not properly tested

Problem:    Use register one too often and not properly tested.
Solution:   Do not always use register one when specifying a register.
            (closes vim/vim#4085)  Add more tests.
https://github.com/vim/vim/commit/9d7fdd403a3a9ee0d008b6dcbcd2ecc9ec0f57b7

1 files changed, 4 insertions, 6 deletions

diff --git a/src/nvim/ops.c b/src/nvim/ops.c
index a18c6e126a..23db7fe5a3 100644
--- a/src/nvim/ops.c
+++ b/src/nvim/ops.c
@@ -1582,12 +1582,10 @@ int op_delete(oparg_T *oap)
       did_yank = true;
     }
 
-    /*
-     * Put deleted text into register 1 and shift number registers if the
-     * delete contains a line break, or when a regname has been specified.
-     */
-    if (oap->regname != 0 || oap->motion_type == kMTLineWise
-        || oap->line_count > 1 || oap->use_reg_one) {
+    // Put deleted text into register 1 and shift number registers if the
+    // delete contains a line break, or when using a specific operator (Vi
+    // compatible)
+    if (oap->motion_type == kMTLineWise || oap->line_count > 1 || oap->use_reg_one) {
       shift_delete_registers(is_append_register(oap->regname));
       reg = &y_regs[1];
       op_yank_reg(oap, false, reg, false);