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Skip FZF_CURRENT_ITEM export for items larger than 64 KB
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A huge item can overflow ARG_MAX and break exec with E2BIG, failing
preview and other child commands. (#4806)
This commit is contained in:
Junegunn Choi
2026-06-23 20:49:50 +09:00
parent 109057877b
commit f2e451596c
4 changed files with 32 additions and 2 deletions
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test/test_core.rb
+20
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@@ -2346,6 +2346,26 @@ class TestCore < TestInteractive
end
end
def test_env_current_item_size_limit
preview = %[(echo START; env | grep '^FZF_CURRENT_ITEM='; echo END) > #{tempname}]
# Large item (> 64 KB) is omitted so it cannot overflow ARG_MAX and break exec
tmux.send_keys %(head -c 70000 /dev/zero | tr '\\0' a | #{FZF} --preview-window 0 --preview "#{preview}"), :Enter
wait do
content = File.exist?(tempname) ? File.read(tempname) : ''
assert_includes content, 'END'
refute_includes content, 'FZF_CURRENT_ITEM='
end
tmux.send_keys :Enter
FileUtils.rm_f(tempname)
# Smaller item is exported as usual
tmux.send_keys %(head -c 1000 /dev/zero | tr '\\0' a | #{FZF} --preview-window 0 --preview "#{preview}"), :Enter
wait do
content = File.exist?(tempname) ? File.read(tempname) : ''
assert_includes content, 'END'
assert_includes content, 'FZF_CURRENT_ITEM=' + ('a' * 1000)
end
end
def test_abort_action_chain
tmux.send_keys %(seq 100 | #{FZF} --bind 'load:accept+up+up' > #{tempname}), :Enter
wait do