sw: insert plain tab char at a numbered para start if indent wouldn't change

Pressing the <tab> key at the start of a numbered paragraph typically is
not interpreted literally, rather we increase the numbering level by
one. This results in a similar increase of indentation, and results in a
semantically better document.

However, this automagic is annoying in case the numbering is a leftover,
which is not even visible, so the user only sees that pressing tab is
"ignored" (if they don't pay attention to the status bar).

Fix the problem by guessing if "downing" the numbering will change the
indent, and if not, fall back to inserting a plain tab character
instead, which will increase the indentation.

Change-Id: I260d3caab447c03a98655d8f5da310082ba0b46e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/102003
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

1 files changed, 10 insertions, 1 deletions

diff --git a/sw/source/uibase/docvw/edtwin.cxx b/sw/source/uibase/docvw/edtwin.cxx
index b03419d744ba..279bf08127a6 100644
--- a/sw/source/uibase/docvw/edtwin.cxx
+++ b/sw/source/uibase/docvw/edtwin.cxx
@@ -2060,7 +2060,16 @@ KEYINPUT_CHECKTABLE_INSDEL:
                              && numfunc::ChangeIndentOnTabAtFirstPosOfFirstListItem() )
                             eKeyState = SwKeyState::NumIndentInc;
                         else
-                            eKeyState = SwKeyState::NumDown;
+                        {
+                            if (numfunc::NumDownChangesIndent(rSh))
+                            {
+                                eKeyState = SwKeyState::NumDown;
+                            }
+                            else
+                            {
+                                eKeyState = SwKeyState::InsTab;
+                            }
+                        }
                     }
                     else if ( rSh.GetTableFormat() )
                     {