Recursive call in Table Cell merging that causes a recursion error if the table is too big #1208
Description
There seems to be some recursion in the _grow_to method here that's used for table cell merging, that means that after a specific number of cells the code fails (for a single column table the max number of cells seems to be the recursion limit less 15). Is there a way around this that doesn't involve increasing the recursion limit?
Example code:
import sys
import docx
doc = docx.Document()
table = doc.add_table(984, 1)
table._cells[0].merge(table._cells[-1])
print('Merging 984 cells succeeds')
try:
doc = docx.Document()
table = doc.add_table(985, 1)
table._cells[0].merge(table._cells[-1])
except RecursionError:
print('but merging 985 cells fails')
sys.setrecursionlimit(1001)
doc = docx.Document()
table = doc.add_table(985, 1)
table._cells[0].merge(table._cells[-1])
print('unless you increase the recursion limit')