fix_border_issues: Fix border issues when cells are merged

In flextable: Functions for Tabular Reporting

Fix border issues when cells are merged

Description

When cells are merged, the rendered borders will be those of the first cell. If a column is made of three merged cells, the bottom border that will be seen will be the bottom border of the first cell in the column. From a user point of view, this is wrong, the bottom should be the one defined for cell 3. This function modify the border values to avoid that effect.

Note since version ⁠0.9.7⁠ that the function is called automatically before rendering, user should not have to call this function anymore.

Usage

fix_border_issues(x, part = "all")

Arguments

x	a 'flextable' object, see flextable-package to learn how to create 'flextable' object.
part	part selector, see section Part selection with the part parameter in <Selectors in flextable>. Value 'all' can be used.

Examples

library(officer)
dat <- data.frame(a = 1:5, b = 6:10)
ft <- flextable(dat)
ft <- theme_box(ft)
ft <- merge_at(ft, i = 4:5, j = 1, part = "body")
ft <- hline(ft,
  i = 5, part = "body",
  border = fp_border(color = "red", width = 5)
)
print(ft)
ft <- fix_border_issues(ft)
print(ft)

flextable documentation built on June 2, 2026, 9:08 a.m.