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97204e1cef
Periodically skip :! spam. This is a "cheat" that works for all UIs and greatly
improves responsiveness when :! spams MB or GB of output:
:!yes
:!while true; do date; done
:!git grep ''
:grep -r '' *
After ~10KB of data is seen from a single :! invocation, output will be skipped
for ~1s and three dots "..." will pulse in the bottom-left. Thereafter the
behavior alternates at every:
* 10KB received
* ~1s throttled
This also avoids out-of-memory which could happen with large :! outputs.
Note: This commit does not change the behavior of execute(':!foo').
execute(':!foo') returns the string ':!foo^M', it captures *only* Vim
messages, *not* shell command output. Vim behaves the same way.
Use system('foo') for capturing shell command output.
Closes #1234
Helped-by: oni-link <knil.ino@gmail.com>
51 lines
2.0 KiB
Lua
51 lines
2.0 KiB
Lua
local session = require('test.functional.helpers')(after_each)
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local child_session = require('test.functional.terminal.helpers')
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local Screen = require('test.functional.ui.screen')
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if session.pending_win32(pending) then return end
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describe("shell command :!", function()
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local screen
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before_each(function()
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session.clear()
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screen = child_session.screen_setup(0, '["'..session.nvim_prog..
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'", "-u", "NONE", "-i", "NONE", "--cmd", "set noswapfile"]')
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screen:expect([[
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{1: } |
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{4:~ }|
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{4:~ }|
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{4:~ }|
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{5:[No Name] }|
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{3:-- TERMINAL --} |
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]])
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end)
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after_each(function()
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child_session.feed_data("\3") -- Ctrl-C
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screen:detach()
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end)
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it("displays output even without LF/EOF. #4646 #4569 #3772", function()
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-- NOTE: We use a child nvim (within a :term buffer)
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-- to avoid triggering a UI flush.
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child_session.feed_data(":!printf foo; sleep 200\n")
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screen:expect([[
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{4:~ }|
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{4:~ }|
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{5:[No Name] }|
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:!printf foo; sleep 200 |
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foo |
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{3:-- TERMINAL --} |
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]])
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end)
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it("throttles shell-command output greater than ~20KB", function()
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child_session.feed_data(
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":!for i in $(seq 2 3000); do echo XXXXXXXXXX; done\n")
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-- If a line with only a dot "." appears, then throttling was triggered.
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screen:expect("\n.", nil, nil, nil, true)
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end)
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end)
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