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Fix preview follow/scroll with long wrapped lines

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Fixes bugs reported in https://github.com/junegunn/fzf/pull/4703:

* Clamp followOffset return value to avoid going past the end of lines
* Account for t.previewed.filled when determining scrollability
This commit is contained in:
Junegunn Choi
2026-03-06 19:21:22 +09:00
parent e7300fe300
commit 0b08f0dea0
2 changed files with 17 additions and 3 deletions
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14
test/test_preview.rb
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@@ -393,6 +393,20 @@ class TestPreview < TestInteractive
end
end
def test_preview_follow_wrap_long_line
tmux.send_keys %(seq 1 | #{FZF} --preview "seq 2; yes yes | head -10000 | tr '\n' ' '" --preview-window follow,wrap --bind up:preview-up,down:preview-down), :Enter
tmux.until do |lines|
assert_equal 1, lines.match_count
assert lines.any_include?('3/3 │')
end
tmux.send_keys :Up
tmux.until { |lines| assert lines.any_include?('2/3 │') }
tmux.send_keys :Up
tmux.until { |lines| assert lines.any_include?('1/3 │') }
tmux.send_keys :Down
tmux.until { |lines| assert lines.any_include?('2/3 │') }
end
def test_close
tmux.send_keys "seq 100 | #{FZF} --preview 'echo foo' --bind ctrl-c:close", :Enter
tmux.until { |lines| assert_equal 100, lines.match_count }