ls: fix columnar output. Closes 8731

In coreutils/ls.c, 1.19 introduced commit
2f7d9e8903029b1b5e51a15f9cb0dcb6ca17c3ac, removing the variable tabstops and
hard coding the column separation to 2 characters, but was not done correctly.
The column_width assumes a gap of 1 character, so the computed number of
columns exceeds the terminal width when many small files are encountered.

A minor problem but surprisingly annoying.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/coreutils/ls.c b/coreutils/ls.c
index c48498858..20bd61860 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -668,7 +668,7 @@ static void display_files(struct dnode **dn, unsigned nfiles)
                         if (column_width < len)
                                 column_width = len;
                 }
-                column_width += 1 +
+                column_width += 2 +
                         IF_SELINUX( ((G.all_fmt & LIST_CONTEXT) ? 33 : 0) + )
                                 ((G.all_fmt & LIST_INO) ? 8 : 0) +
                                 ((G.all_fmt & LIST_BLOCKS) ? 5 : 0);
@@ -696,8 +696,8 @@ static void display_files(struct dnode **dn, unsigned nfiles)
                         if (i < nfiles) {
                                 if (column > 0) {
                                         nexttab -= column;
-                                        printf("%*s ", nexttab, "");
-                                        column += nexttab + 1;
+                                        printf("%*s", nexttab, "");
+                                        column += nexttab;
                                 }
                                 nexttab = column + column_width;
                                 column += display_single(dn[i]);