<[email protected]> 於 2019年2月1日 週五 上午1:49寫道： > I have "set revert-all-at-newline on" in ~/.inputrc. That's basically > the only thing there, aside from some keybindings and "set bell-style > none". I don't remember where I picked it up, it's been there for a > long time. > > If I follow John's instructions with '4. Hit "down" to navigate to an > empty place' then I don't get the observed behavior, the line I edited > has been reverted. > > However, if I 'hit "up" to navigate to another line in the history' > and then press "Enter", the edits I made to the 5566 line are not > reverted. This only holds if the line I press "Enter" at is *above* > the line I edited in the history, if I for example if I start with a > new prompt, go up two history entries, edit the first one, and then > navigate down and hit "enter" on the second one, the edit gets > reverted. If I edit the second one, and navigate up and hit "enter" on > the first one, the edit is still around and it shows up with an > asterisk in the output of "history": > > 19991 echo a > 19992* echo 5 # was "echo b" > 19993 echo a > 19994 history | tail > > This is with Bash 5.0.0(1). >
Yes, I can reproduce that too. My bash version is 4.4.19. > > Frederick > > On Thu, Jan 31, 2019 at 09:54:29AM -0500, Chet Ramey wrote: > >On 1/30/19 10:34 PM, 林自均 wrote: > >> Hi Chet, > >> > >> Sorry. I realized that I didn't understand what "revert-all-at-newline" > is > >> doing. I checked the manual, it says: > >> > >> revert-all-at-newline (Off) > >> If set to On, readline will undo all changes to history > lines > >> before returning when accept-line is executed. By > default, > >> history lines may be modified and retain individual undo > lists > >> across calls to readline. > >> > >> According to the description, I set it to "On" and tried the following > >> steps in bash: > >> > >> 1. Type "echo 5566" and hit "enter" > >> 2. Hit "up" to navigate to the history "echo 5566" > >> 3. Change it to "echo 7788" and DON'T hit "enter" > >> 4. Hit "down" to navigate to an empty place > >> 5. Type "ls" and hit "enter" > >> 6. Type "history | tail -n 3" and hit "enter" > >> > >> After that, I expected that I can see the history "echo 5566" in the > last > >> command since it should be reverted. However, I still see "echo 7788" in > >> the results: > >> > >> $ history | tail -n 3 > >> 501* echo 7788 > >> 502 ls > >> 503 history | tail -n 3 > >> > >> What did I miss? Thank you. > > > >It's hard to say. When I try this, I get 'echo 5566' as expected. I > suspect > >something about how you set revert-all-at-newline, since the `echo 7788' > >line has a `*' preceding it, indicating that it's still got an active undo > >list. > > > >-- > >``The lyf so short, the craft so long to lerne.'' - Chaucer > > ``Ars longa, vita brevis'' - Hippocrates > >Chet Ramey, UTech, CWRU [email protected] http://tiswww.cwru.edu/~chet/ > > > >_______________________________________________ > >Bug-readline mailing list > >[email protected] > >https://lists.gnu.org/mailman/listinfo/bug-readline >
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