[LyX/2.3.x] Allow to type a space in front of another one

[Jean-Marc Lasgouttes]

commit aa2f5eb426db6d3ea307c726fe7d649d9634f92d
Author: Jean-Marc Lasgouttes <lasgout...@lyx.org>
Date:   Mon Jan 14 16:37:10 2019 +0100

    Allow to type a space in front of another one
    
    This is a follow-up to 714b731e. This fixes the issue when the cursor
    is in front of a space
      abc| def
    and one inserts another space (to start a word). DEPM would eat one
    space and produce
      abc |def
    instead of
      abc | def
    
    Additionally, fix the same_par boolean, wheich did not take the cell
    index into account.
    
    Related to ticket #11412.
    
    (cherry picked from commit 7848d3c90c0837e8e8549db37bf4bc5cd7e7dad1)
---
 src/Text2.cpp |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/Text2.cpp b/src/Text2.cpp
index d6f5a83..bcd38f4 100644
--- a/src/Text2.cpp
+++ b/src/Text2.cpp
@@ -824,8 +824,8 @@ bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
           There are still some small problems that can lead to
           double spaces stored in the document file or space at
           the beginning of paragraphs(). This happens if you have
-          the cursor between to spaces and then save. Or if you
-          cut and paste and the selection have a space at the
+          the cursor between two spaces and then save. Or if you
+          cut and paste and the selection has a space at the
           beginning and then save right after the paste. (Lgb)
        */
 
@@ -845,7 +845,8 @@ bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
 
        // Whether a common inset is found and whether the cursor is still in
        // the same paragraph (possibly nested).
-       bool const same_par = depth < cur.depth() && old.pit() == 
cur[depth].pit();
+       bool const same_par = depth < cur.depth() && old.idx() == 
cur[depth].idx()
+               && old.pit() == cur[depth].pit();
        bool const same_par_pos = depth == cur.depth() - 1 && same_par
                && old.pos() == cur[depth].pos();
 
@@ -868,7 +869,7 @@ bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
                if (from != to && from > 0 && to < oldpar.size())
                        ++from;
 
-               if (same_par && cur.pos() > from && cur.pos() < to)
+               if (same_par && cur.pos() >= from && cur.pos() < to)
                        ++from;
 
                // Remove spaces and adapt cursor.