Re: issues in bash found while creating command result display

2019-04-16 Thread Michael Felt (aixtools)
Sent from my iPhone > On 17 Apr 2019, at 01:37, Paul Wise wrote: > >> On Tue, 2019-04-16 at 14:57 -0400, Chet Ramey wrote: >> >> Why take so much effort to (imperfectly) figure out and display >> things you already know? > > Correctness. If what the user knows You mean think they know, bett

FYI - readline.0 has 7.0 in the footer whereas directory name is readline-8.0

2019-04-16 Thread L A Walsh
^^ In the readline-8.0/doc directory from the readline tar with time/date: Jan 7th 06:13, the ".0" (appears to be manpage) has a 7.0 footer-line.

Re: issues in bash found while creating command result display

2019-04-16 Thread Paul Wise
On Tue, 2019-04-16 at 14:57 -0400, Chet Ramey wrote: > Why take so much effort to (imperfectly) figure out and display > things you already know? Correctness. If what the user knows doesn't match what the program knows then they might think that the program is buggy or that there is something mal

Re: issues in bash found while creating command result display

2019-04-16 Thread Chet Ramey
On 4/14/19 9:40 PM, Paul Wise wrote: >> The tool you have is the exit status of the last command. >> From that perspective, there's no difference. > > From the perspective of the user of a shell prompt there is a difference. I've been thinking about this. The user at a shell prompt is the only o

Re: issues in bash found while creating command result display

2019-04-16 Thread Chet Ramey
On 4/16/19 10:36 AM, Eric Blake wrote: > On 4/15/19 4:31 PM, Chet Ramey wrote: > >> >> The Korn shell uses values > 256 to denote `internal' shell exit statuses, >> but that violates POSIX. > > No, actually it does NOT violate POSIX. In fact, POSIX has tried hard > to permit that ksh behavior, i

Re: issues in bash found while creating command result display

2019-04-16 Thread Eric Blake
On 4/15/19 4:31 PM, Chet Ramey wrote: > > The Korn shell uses values > 256 to denote `internal' shell exit statuses, > but that violates POSIX. No, actually it does NOT violate POSIX. In fact, POSIX has tried hard to permit that ksh behavior, in particular since that extension allows an easy di

Re: issues in bash found while creating command result display

2019-04-16 Thread Chet Ramey
On 4/15/19 10:29 PM, Paul Wise wrote: > I wonder if bash could set an additional variable to indicate if $? is > from a normal exit, a signal exit, a shell keystroke etc, as well as a > corresponding equivalent array that is about PIPESTATUS. That falls apart fairly quickly for anything but the c