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tail: Handle tail -n -val properly

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sin 2015-02-09 15:52:31 +00:00
parent a5cc60f2e0
commit f802a544e7
1 changed files with 2 additions and 1 deletions

3
tail.c

@ -74,7 +74,8 @@ main(int argc, char *argv[])
break;
case 'n':
lines = EARGF(usage());
n = estrtonum(lines, 0, MIN(LLONG_MAX, SIZE_MAX));
n = estrtonum(lines[0] == '-' ? lines + 1 : lines,
0, MIN(LLONG_MAX, SIZE_MAX));
if (lines[0] == '+')
tail = dropinit;
break;