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Improve preview window update events

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- Update preview window even if there is no match for the query string
  if any of the placeholder expressions evaluates to a non-empty string.
- Also, if the command template contains {q}, preview window will be
  updated if the query string changes even though the focus remains on
  the same item.

An example:

    git log --oneline --color=always |
       fzf --reverse --ansi --preview \
       '[ -n {1} ] && git show --color=always {1} || git show --color=always {q}'

Close #1307
This commit is contained in:
Junegunn Choi
2018-06-10 01:40:22 +09:00
parent af87650bc4
commit 2c26f02f5c
3 changed files with 67 additions and 8 deletions
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29
test/test_go.rb
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@@ -1355,6 +1355,35 @@ class TestGoFZF < TestBase
tmux.until { |_| %w[1 2 3] == File.readlines(tempname).map(&:chomp) }
end
def test_preview_flags
tmux.send_keys %(seq 10 | sed 's/^/:: /; s/$/ /' |
#{FZF} --multi --preview 'echo {{2}/{s2}/{+2}/{+s2}/{q}}'), :Enter
tmux.until { |lines| lines[1].include?('{1/1 /1/1 /}') }
tmux.send_keys '123'
tmux.until { |lines| lines[1].include?('{////123}') }
tmux.send_keys 'C-u', '1'
tmux.until { |lines| lines.match_count == 2 }
tmux.until { |lines| lines[1].include?('{1/1 /1/1 /1}') }
tmux.send_keys :BTab
tmux.until { |lines| lines[1].include?('{10/10 /1/1 /1}') }
tmux.send_keys :BTab
tmux.until { |lines| lines[1].include?('{10/10 /1 10/1 10 /1}') }
tmux.send_keys '2'
tmux.until { |lines| lines[1].include?('{//1 10/1 10 /12}') }
tmux.send_keys '3'
tmux.until { |lines| lines[1].include?('{//1 10/1 10 /123}') }
end
def test_preview_q_no_match
tmux.send_keys %(: | #{FZF} --preview 'echo foo {q}'), :Enter
tmux.until { |lines| lines.match_count == 0 }
tmux.until { |lines| !lines[1].include?('foo') }
tmux.send_keys 'bar'
tmux.until { |lines| lines[1].include?('foo bar') }
tmux.send_keys 'C-u'
tmux.until { |lines| !lines[1].include?('foo') }
end
def test_no_clear
tmux.send_keys "seq 10 | fzf --no-clear --inline-info --height 5 > #{tempname}", :Enter
prompt = '> < 10/10'