[LyX/master] Append rows and columns if necessary when pasting into table

[Juergen Spitzmueller]

commit 89f6de98352e37b79d4615761ed620786973daca
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Tue Apr 23 08:34:53 2019 +0200

    Append rows and columns if necessary when pasting into table
---
 src/insets/InsetTabular.cpp |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/insets/InsetTabular.cpp b/src/insets/InsetTabular.cpp
index 5122e8f..9df7d46 100644
--- a/src/insets/InsetTabular.cpp
+++ b/src/insets/InsetTabular.cpp
@@ -6997,20 +6997,26 @@ bool InsetTabular::insertPlaintextString(BufferView & 
bv, docstring const & buf,
        }
 
        size_t op = 0;
-       idx_type const cells = loctab->numberofcells;
+       idx_type cells = loctab->numberofcells;
        p = 0;
        cols = ocol;
        rows = loctab->nrows();
-       col_type const columns = loctab->ncols();
+       col_type columns = loctab->ncols();
 
-       while (cell < cells && p < len && row < rows &&
+       while (p < len &&
               (p = buf.find_first_of(from_ascii("\t\n"), p)) != 
docstring::npos)
        {
                if (p >= len)
                        break;
                switch (buf[p]) {
                case '\t':
-                       // we can only set this if we are not too far right
+                       // append column if necessary
+                       if (cols == columns) {
+                               loctab->appendColumn(cols - 1);
+                               columns = loctab->ncols();
+                               cells = loctab->numberofcells;
+                               ++cell;
+                       }
                        if (cols < columns) {
                                shared_ptr<InsetTableCell> inset = 
loctab->cellInset(cell);
                                Font const font = 
bv.textMetrics(&inset->text()).
@@ -7032,6 +7038,12 @@ bool InsetTabular::insertPlaintextString(BufferView & 
bv, docstring const & buf,
                        }
                        cols = ocol;
                        ++row;
+                       // append row if necessary
+                       if (row == rows && p < len - 1) {
+                               loctab->appendRow(row - 1);
+                               rows = loctab->nrows();
+                               cells = loctab->numberofcells;
+                       }
                        if (row < rows)
                                cell = loctab->cellIndex(row, cols);
                        break;