On 10/12/07, Bram Moolenaar <[EMAIL PROTECTED]> wrote:
>
>
> Yakov Lerner wrote:
>
> > On 10/11/07, Bram Moolenaar <[EMAIL PROTECTED]> wrote:
> > >
> > >
> > > Yakov Lerner wrote:
> > >
> > > > :help :! says:
> > > > :silent !{cmd}
> > > > The screen is not redrawn then, thus you have to use
> > > > CTRL-L or ":redraw!" if the command did display something.
> > > >
> > > > The last part ("if the command did display something") is not true.
> > > > In console vim, screen is always grabled after ':silent !CMD"
> > > > even if CMD did not print anything. (try ':silent !true' after
> ':help
> > > > help').
> > > > The correct wording would be:
> > > >
> > > > :silent !{cmd}
> > > > The screen is not redrawn then, thus you have to use
> > > > CTRL-L or ":redraw!" even if the command did not display
> anything.
> > >
> > > The docs are correct, ":silent !true" doesn't mess up the display for
> > > me.
> > >
> > > Check your shell init scripts for something that produces output.
> >
> >
> > To make sure that shell init script are not even invoked, I set
> > :set shell=/bin/true
> > Still, screen is cleared after :silent !/bin/true.
> > In gdb, I caught the place and the string that clears the screen.
> > The string is "\033[?1049h\033[?1h\033=" (length=15).
> > It is printed after fork+execve("/bin/true"), at this place:
> >
> > mch_write ( s=0x820b040 "\033[?1049h\033[?1h\033="..., len=15) at
> > os_unix.c:307
> > 307 write(1, (char *)s, len);
> > (gdb) n
> >
> > [Yakov] the vim screen is cleared at after the write() above
> >
> > 308 if (p_wd) /* Unix is too fast, slow down a bit
> more */
> > (gdb) where
> > #0 mch_write (
> > s=0x820b040 "\033[?1049h\033[?1h\033="..., len=15) at os_unix.c:308
> > #1 0x081a2b74 in ui_write (
> > s=0x820b040 "\033[?1049h\033[?1h\033="..., len=15) at ui.c:51
> > #2 0x0819ed96 in out_flush () at term.c:2545
> > #3 0x0819fa6a in starttermcap () at term.c:3233
> > #4 0x08090393 in do_shell (cmd=0x82155d8 "/bin/true", flags=0) at
> > ex_cmds.c:1471
>
> Apparently your termcap settings are causing this. Try this:
> :set t_ti= t_ks=
Didn't help.
The issue is related to terminal emulator somehow.
Under minicom, ':silent !' works as documented (minicom emulation set to
"ANSI").
Under xterm and konsole, ':silent !true' clears the screen.
Bram, which terminal emulator are you using ?
It might have something to do with the colorscheme you are using, esp.
> if you are using a non-default background color.
This is 'vim -u NONE', i.e. default everything.
Yakov
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