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feat(:source, nvim_exec): defer script item creation until s:var access

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For anonymous scripts, defer the creation of script items until an attempt to access a script-local
variable is made. This dramatically reduces the number of script items created when using lots of
vim.cmd and nvim_exec especially.

This will mean <SID> usage fails until a script-local variable access is first made.
This commit is contained in:
Sean Dewar
2021-10-14 00:40:46 +01:00
parent d4ed51eb44
commit da9b0abc67
5 changed files with 61 additions and 32 deletions
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10
test/functional/ex_cmds/source_spec.lua
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@@ -26,13 +26,17 @@ describe(':source', function()
\ k: "v"
"\ (o_o)
\ }
let c = expand("<SID>")->empty()
let s:s = 0zbeef.cafe
let c = s:s]])
let d = s:s]])
command('source')
eq('2', meths.exec('echo a', true))
eq("{'k': 'v'}", meths.exec('echo b', true))
eq("0zBEEFCAFE", meths.exec('echo c', true))
-- Script items are created only on script var access
eq("1", meths.exec('echo c', true))
eq("0zBEEFCAFE", meths.exec('echo d', true))
exec('set cpoptions+=C')
eq('Vim(let):E15: Invalid expression: #{', exc_exec('source'))
@@ -62,7 +66,7 @@ describe(':source', function()
feed_command(':source')
eq('4', meths.exec('echo a', true))
eq("{'K': 'V'}", meths.exec('echo b', true))
eq("<SNR>3_C()", meths.exec('echo D()', true))
eq("<SNR>1_C()", meths.exec('echo D()', true))
-- Source last line only
feed_command(':$source')