#200 kdiff3 ignores context during 3-way merges

[Pierre pro]

During a 3-way merge, kdiff3 ignores context lines, such that lines added in "local" in the middle of lines removed in "other" result in lines being put in the middle of nowhere in the output.

To reproduce, run
kdiff3 [--auto] base left right -o merged
with the base, left and right found in the attached attachment.tar

Expected result:
kdiff3 reports a conflict for the lines
procedure-5.5
procedure-5.6

Actual result:
No conflict is reported; if --auto is provided, merge silently succeeds and outputs the "merged" file found in the attached "attachment.tar", where the two lines
procedure-5.5
procedure-5.6
simply appear in the middle of nowhere, outside of any function.

kdiff3: 0.9.96 on Ubuntu Linux

(cross-posted from bugs.kde.org)