Bug#146964: diff: Argument --horizon-lines documented, handled, not used (fwd)

[Santiago Vila]

Hello.

I received this report from the Debian bug system. By looking at the
code I believe this is already fixed in diffutils-2.8, but I didn't
find yet a test case. It's fixed?

---------- Forwarded message ----------
Date: Tue, 14 May 2002 11:24:14 -0500
From: John R. Daily <address@hidden>
To: Debian Bug Tracking System <address@hidden>
Subject: #146964: diff: Argument --horizon-lines documented, handled, not used

Package: diff
Version: 2.7-29
Severity: normal

The man page states:

       --horizon-lines=lines
              Do  not  discard the last lines lines of the common
              prefix and the first lines lines of the common suf­
              fix.

Judging both by the output and by diff.c (snippet below),
--horizon-lines is ignored.

        case 140:
          if (ck_atoi (optarg, &horizon_lines) || horizon_lines < 0)
            fatal ("horizon must be a nonnegative integer");
          break;

Note that nothing seems to be actually done with the argument.