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1991-08-07
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From: neil@yc.estec.nl.UUCP (Neil Dixon)
Newsgroups: comp.sources.misc
Subject: v02i061: More complete patch for pd-cdiff
Message-ID: <7446@ncoast.UUCP>
Date: 29 Feb 88 01:13:39 GMT
Approved: allbery@ncoast.UUCP
Comp.sources.misc: Volume 2, Issue 61
Submitted-By: Neil Dixon <neil@yc.estec.nl>
Archive-Name: pd-diff-pat-2
[Don't look now, but issue 63 is the next version! ++bsa]
In article <7242@ncoast.UUCP> mike2@lcuxa.UUCP writes:
>
>Neil Dixon uncovered a flaw in the logic of the cdiff program that
>was distributed early in January, and which was redistributed with
>changes to make it compilable in Turbo C. I've tested his patch
>both on the Unix SysVr2 version and on the PC, and have not found
>any errors.
I'm afraid my patch was both incomplete and inelegent. Here's a better patch
to the ORIGINAL program.
*** cdiff.c.orig
--- cdiff.c
**************
*** 937,944
}
}
putchar('\n');
! if (!eflag) {
! fetch(oldseek, astart, aend, lenA, infd[0],
cflag ? (c=='d' ? "- " : "! ") : "< ");
if (cflag) {
fputs("--- ", stdout);
--- 937,944 -----
}
}
putchar('\n');
! if (cflag || c != 'a') {
! fetch(oldseek, astart , aend, lenA, infd[0],
cflag ? (c=='d' ? "- " : "! ") : "< ");
if (cflag) {
fputs("--- ", stdout);
**************
*** 947,953
} else if (astart <= aend && bstart <= bend)
printf("---\n");
}
! fetch(newseek, bstart, bend, lenB, infd[1],
cflag ? (c=='a' ? "+ " : "! ") : (eflag ? "" : "> "));
if (eflag && bstart <= bend)
printf(".\n");
--- 947,954 -----
} else if (astart <= aend && bstart <= bend)
printf("---\n");
}
! if(cflag || c != 'd') {
! fetch(newseek, bstart, bend, lenB, infd[1],
cflag ? (c=='a' ? "+ " : "! ") : (eflag ? "" : "> "));
}
if (eflag && bstart <= bend)
**************
*** 949,954
}
fetch(newseek, bstart, bend, lenB, infd[1],
cflag ? (c=='a' ? "+ " : "! ") : (eflag ? "" : "> "));
if (eflag && bstart <= bend)
printf(".\n");
}
--- 950,956 -----
if(cflag || c != 'd') {
fetch(newseek, bstart, bend, lenB, infd[1],
cflag ? (c=='a' ? "+ " : "! ") : (eflag ? "" : "> "));
+ }
if (eflag && bstart <= bend)
printf(".\n");
}
--
Neil Dixon <neil@yc.estec.nl> UUCP:...!mcvax!esatst!neil, BITNET: NDIXON@ESTEC
Thermal Control & Life Support Division (YC)
European Space Research and Technology Centre (ESTEC),
Noordwijk, The Netherlands.