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9706664b88
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Justin M. Keyes 9706664b88 system('foo &', 'bar'): Show error, don't crash. 
Closes #3529
Closes #5241

In Vim,
    :echo system('cat - &', 'foo')
works because for both system() and :! Vim writes input to a temp file and uses
shell syntax to redirect the file to the backgrounded `cat` (get_cmd_output()
.. make_filter_cmd()).

In Nvim,
    :echo system('cat - &', 'foo')
fails because we write the input directly via pipes (shell.c:do_os_system()),
but (per POSIX[1]) backgrounded process input stream is redirected from
/dev/null (unless overridden by shell redirection; supported only by some shells
[2]), so our writes are ignored, the process exits quickly, and if we are
writing data larger than the buffer size we'll see EPIPE.

This still works:
    :%w !tee > foo1358.txt &
but this does not:
    :%w !tee foo1358.txt &
though it *should* (why doesn't it?) because we still do the temp file dance
in do_bang() .. do_filter().

[1] http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_09_03_02
[2] http://unix.stackexchange.com/a/71218
2016-10-19 01:39:05 +02:00
..
api.txt api: consistently use nvim_ prefix and update documentation 2016-08-31 21:57:06 +02:00
arabic.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
autocmd.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
change.txt vim-patch:77cdfd1 2016-07-08 01:43:36 -04:00
cmdline.txt vim-patch:256972a 2016-05-03 21:22:45 +02:00
debug.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
deprecated.txt doc 2016-10-16 18:08:53 +02:00
develop.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
diff.txt vim-patch:b4ff518 2016-05-03 21:03:17 +02:00
digraph.txt doc: Remove Vi annotations 2015-05-03 17:47:31 -04:00
editing.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
eval.txt system('foo &', 'bar'): Show error, don't crash. 2016-10-19 01:39:05 +02:00
farsi.txt misc: UNIX => Unix #4022 2016-01-16 18:34:31 -05:00
filetype.txt [RFC] man.vim: remove <Plug> mappings (#5290) 2016-09-04 03:53:58 +02:00
fold.txt vim-patch:d042dc8 2016-05-03 21:13:41 +02:00
ft_ada.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
ft_sql.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
gui.txt doc: mention tnoremap 2016-08-01 04:58:40 -04:00
hebrew.txt doc: Remove Vi annotations 2015-05-03 17:47:31 -04:00
help.txt doc: Add if_ruby.txt to doc/help.txt (#5186) 2016-08-07 20:42:13 -04:00
helphelp.txt vim-patch:03413f4 2016-07-08 01:45:21 -04:00
howto.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
if_cscop.txt Add if_cscope documentation for querytype 'a' 2016-08-26 22:13:56 +02:00
if_pyth.txt doc/python: cleanup 2016-06-15 22:50:37 -04:00
if_ruby.txt Merge #4980 'Support legacy :ruby commands'. 2016-07-10 14:16:12 -04:00
indent.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
index.txt vim-patch:e18c0b3 2016-07-08 01:45:20 -04:00
insert.txt Doc: Ruby omni-completion works (#5497) 2016-10-17 19:49:57 +02:00
intro.txt keymap: Support <D-...> (super/command key). 2016-02-22 02:41:40 -05:00
job_control.txt doc 2016-07-03 03:53:42 -04:00
Makefile build: define doc_html task 2016-06-06 11:04:05 -04:00
makehtml.awk doc: fix links to index.html and vimindex.html 2014-09-21 15:20:21 +02:00
maketags.awk re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
map.txt vim-patch:7.4.1898 2016-08-24 11:51:59 -04:00
mbyte.txt doc: Remove references to GTK. 2016-01-14 13:16:10 -05:00
message.txt vim-patch:dae8d21 2016-07-08 01:38:21 -04:00
mlang.txt vim-patch:85084ef 2016-06-02 09:39:31 -04:00
motion.txt vim-patch:f2571c6 2015-11-08 03:39:07 +01:00
msgpack_rpc.txt api: Establish API naming convention. (#5344) 2016-09-17 06:30:36 +02:00
nvim_terminal_emulator.txt Document terminal buffer-local variables 2016-07-12 14:42:17 -07:00
nvim.txt doc: gentle transition steps; stub XDG section 2016-07-29 00:51:02 -04:00
options.txt vim-patch:7.4.1604 2016-09-24 14:03:14 -04:00
os_win32.txt vim-patch:5f148ec 2016-07-08 01:43:36 -04:00
pattern.txt vim-patch:03413f4 2016-07-08 01:45:21 -04:00
pi_gzip.txt doc: Remove Vi annotations 2015-05-03 17:47:31 -04:00
pi_health.txt CheckHealth 2016-08-21 21:25:33 -04:00
pi_matchit.txt plugin: enable the matchit plugin by default #2723 2015-06-04 22:45:19 -04:00
pi_msgpack.txt documentation: Add documentation for autoload/msgpack.vim 2015-11-01 21:27:28 +03:00
pi_netrw.txt vim-patch:e0fa374 2016-06-07 12:19:50 -04:00
pi_paren.txt plugin: enable the matchit plugin by default #2723 2015-06-04 22:45:19 -04:00
pi_spec.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
pi_tar.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
pi_tutor.txt runtime: Include vim-tutor-mode 2015-08-15 15:25:30 -03:00
pi_zip.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
print.txt vim-patch:8a94d87 2015-12-17 21:56:41 -05:00
provider.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
quickfix.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
quickref.txt vim-patch:03413f4 2016-07-08 01:45:21 -04:00
recover.txt doc: Remove more references to MS-DOS 2016-01-16 14:12:56 -05:00
remote_plugin.txt host.vim: s:GetManifestPath(): Remove for-loop. 2016-08-17 17:43:26 -04:00
remote.txt vim-patch:f3c2afb 2016-01-15 16:09:46 +01:00
repeat.txt vim-patch:03413f4 2016-07-08 01:45:21 -04:00
rileft.txt doc: Remove references to Athena GUI support #3891 2015-12-22 18:39:51 -05:00
russian.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
scroll.txt doc: Remove references to GTK. 2016-01-14 13:16:10 -05:00
sign.txt doc: Remove references to GTK. 2016-01-14 13:16:10 -05:00
spell.txt doc: Move spell design discussion. 2016-06-15 19:29:26 -04:00
sponsor.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
starting.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
syntax.txt doc/deprecated.txt (#5338) 2016-09-24 15:07:49 +02:00
tabpage.txt Correct documention on order autocmds 2016-02-23 12:24:43 +01:00
tagsrch.txt vim-patch:7.4.941 2016-03-06 00:32:39 +09:00
term.txt vim-patch:d042dc8 2016-05-03 21:13:41 +02:00
tips.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
uganda.txt vim-patch:8a94d87 2015-12-17 21:56:41 -05:00
undo.txt documentation: Update information about default location of undo files 2016-04-11 07:00:57 +03:00
usr_01.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_02.txt vim-patch:85084ef 2016-06-02 09:39:31 -04:00
usr_03.txt vim-patch:acb4f22 2016-05-25 21:05:01 -04:00
usr_04.txt "halfway a line" is a very confusing phrase 2015-01-22 21:57:03 -08:00
usr_05.txt vim-patch:7db8f6f 2016-07-08 01:45:20 -04:00
usr_06.txt Update path to colors directory in syntax highlighting docs 2016-03-20 21:22:51 -04:00
usr_07.txt "halfway a line" is a very confusing phrase 2015-01-22 21:57:03 -08:00
usr_08.txt doc: diff-mode: minor adjustments 2015-02-03 18:52:18 -05:00
usr_09.txt misc: UNIX => Unix #4022 2016-01-16 18:34:31 -05:00
usr_10.txt misc: UNIX => Unix #4022 2016-01-16 18:34:31 -05:00
usr_11.txt Remove swapsync. 2016-01-14 13:13:32 -05:00
usr_12.txt man.vim: doc fixes #5171 2016-08-13 08:58:21 -04:00
usr_20.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
usr_21.txt Docs: remove reference to removed :shell command 2015-12-06 14:21:22 +01:00
usr_22.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
usr_23.txt misc: UNIX => Unix #4022 2016-01-16 18:34:31 -05:00
usr_24.txt doc: Remove more references to MS-DOS 2016-01-16 14:12:56 -05:00
usr_25.txt vim-patch:7db8f6f 2016-07-08 01:45:20 -04:00
usr_26.txt defaults: enable 'hlsearch' by default. #2859 2015-06-20 16:40:03 -04:00
usr_27.txt doc: Remove more references to MS-DOS 2016-01-16 14:12:56 -05:00
usr_28.txt Remove vimdiff: Review suggestions 2015-02-03 16:51:41 -05:00
usr_29.txt vim-patch:dae8d21 2016-07-08 01:38:21 -04:00
usr_30.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_31.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_32.txt re-integrate runtime/ vim-patch:0 #938 2014-07-29 02:12:31 +00:00
usr_40.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_41.txt vim-patch:03413f4 2016-07-08 01:45:21 -04:00
usr_42.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_43.txt vim-patch:a0f849e 2016-05-03 19:25:18 +02:00
usr_44.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_45.txt documentation: Update documentation 2015-10-23 14:54:10 +03:00
usr_toc.txt vim-patch:7.4.1649 2016-07-08 01:45:20 -04:00
various.txt eval.c: rename capture() to execute() (#5132) 2016-07-31 13:23:29 -04:00
vi_diff.txt vim-patch:38a5563 2016-06-07 12:02:56 -04:00
vim_diff.txt system('foo &', 'bar'): Show error, don't crash. 2016-10-19 01:39:05 +02:00
visual.txt doc: Remove Vi annotations 2015-05-03 17:47:31 -04:00
windows.txt vim-patch:681baaf 2016-06-07 06:46:37 -04:00