On 23/10/12 21:48, Marc Weber wrote:
What magic is gvim doing to hide its documentation?
I understand this:
[marc@nixos:~]$ gvim --help 1> /tmp/file; ls -l /tmp/file
3326 (bytes in /tmp/file)
I'd expect stdout to be printed to my console
[marc@nixos:~]$ gvim --help 2> /tmp/file; ls -l /tmp/file
0 (bytes in /tmp/file)
I'd expect stdout to be written to the file
[marc@nixos:~]$ bash -c "(gvim --help) >/tmp/file 2>&1" ; ls -l /tmp/file
0 (bytes in /tmp/file)
So why is gvim hiding its documentation when stderr is redirected to a
file?
Marc Weber
The following works for me when using gvim 7.3.712 with GTK2-GNOME GUI:
gvim --help
help appears in the terminal
gvim --help >gvimhelp.txt
help is written to gvimhelp.txt
gvim --help >gvimhelp1.txt 2>&1
help is written to gvimhelp1.txt
gvim --help |tee gvimhelp2.txt
help is written to gvimhelp2.txt
gvim --help 2>&1 |tee gvimhelp3.txt
help is written to gvimhelp3.txt
gvim --help 2>gvim.stderr.txt
help appears in the terminal
gvim.stderr.txt is created zero-length
gvim --help 1>gvimhelp4.txt 2>gvim.stderr2.txt
help (2236 bytes) appears in gvimhelp4.txt
gvim.stderr2.txt is created zero-length
(gvim --help) >gvimhelp5.txt 2>&1
help (2236 bytes) appears in gvimhelp5.txt
bash -c '(gvim --help) >gvimhelp6.txt 2>&1'
(with single quotes)
help appears in gvimhelp6.txt
bash -c "(gvim --help) >gvimhelp7.txt 2>&1"
(with double quotes)
help appears in gvimhelp7.txt
The fact that I look at the file afterwards is not the reason:
bash -c "(gvim --help) >gvimhelp8.txt 2>&1" ; ls -l gvimhelp8.txt
-rw-r--r-- 1 root root 2236 Oct 24 00:34 gvimhelp8.txt
However:
linux:~ # su -l tonymec
tonymec@linux:~> gvim --help >gvimhelp.txt; ls -l gvimhelp.txt
E233: cannot open displayVim: Warning: Output is not to a terminal
Press ENTER or type command to continue
(then nothing else appears, and keyboard stops being responsive, until I
hit Ctrl-Alt-F4 to log in as root to /dev/tty4 and kill gvim from there)
Writing viminfo file "/home/tonymec/.viminfo"
Terminated
-rw-r--r-- 1 tonymec ajm-user 11925 Oct 24 00:55 gvimhelp.txt
Inspection of this gvimhelp.txt shows that it contains one "vim screen"
(in colorscheme colours), the help (in konsole colours) then the bottom
of the Vim screen including a "wildmenu" but no statusline.
Which gvim flavour are you using? The first lines of :version in my gvim
(see ":help :redir" about how to capture them into @+ which is the
clipboard) are as follows:
VIM - Vi IMproved 7.3 (2010 Aug 15, compiled Oct 23 2012 05:40:32)
Included patches: 1-712
Compiled by [email protected]
Huge version with GTK2-GNOME GUI. Features included (+) or not (-):
(I pasted them all then edited away in the mailer what was not relevant
for this thread).
Oh, and BTW my "standard" shell is bash.
Best regards,
Tony.
--
"... After all, all he did was string together a lot of old, well-known
quotations."
-- H. L. Mencken, on Shakespeare
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