> It seems that the current line number shall be set to zero only if no lines > remain in the buffer. > > Moreover, the description of the i command states that "This command differs > from the a command only in the placement of the input text". So you may be > right that the current address should be 1 in both cases.
You may be right and I'm being paranoid :) Quoting POSIX's RATIONALE section: "For consistency with the a and r commands and better user functionality, the i and c commands must also accept an address of 0, in which case 0i is treated as 1i and likewise for the c command." So these command should behave as if the addressed line was 1 for all intents and purposes, *including* setting the final address in case of empty input. On Thu, Apr 21, 2016 at 10:17 PM, Antonio Diaz Diaz <anto...@gnu.org> wrote: > Ori Avtalion wrote: >>> >>> According to the POSIX spec, it should be interpreted as 1: >>> "the current line is set to the last inserted line or, if there was >>> none, to the addressed line. >>> [..] >>> Address 0 shall be valid for this command; it shall be interpreted >>> as if address 1 were specified." >> >> [..] >>> >>> However, I think the spirit of the text does suggest that the current >>> address should be 1. :) >> >> >> That said, the descriptions for Change and Delete explicitly state "the >> current >> line number shall be set to zero" in some situations, so perhaps if an >> explicit >> address of 0 is given as input, it should be "interpreted as 1" for the >> purpose >> of Insert, but kept at 0 if no input was provided. > > > It seems that the current line number shall be set to zero only if no lines > remain in the buffer. > > Moreover, the description of the i command states that "This command differs > from the a command only in the placement of the input text". So you may be > right that the current address should be 1 in both cases. > > > Best regards, > Antonio. _______________________________________________ bug-ed mailing list bug-ed@gnu.org https://lists.gnu.org/mailman/listinfo/bug-ed
