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Support ANSI escape sequence for clearing display in preview window

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fzf --preview 'for i in $(seq 100000); do
    (( i % 200 == 0 )) && printf "\033[2J"
    echo "$i"
    sleep 0.01
  done'
This commit is contained in:
Junegunn Choi
2020-10-23 21:37:20 +09:00
parent e2b87e0d74
commit a4d9b0b468
4 changed files with 45 additions and 2 deletions
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13
man/man1/fzf.1
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@@ -379,6 +379,18 @@ Note that you can escape a placeholder pattern by prepending a backslash.
Preview window will be updated even when there is no match for the current
query if any of the placeholder expressions evaluates to a non-empty string.
Since 0.24.0, fzf can render partial preview content before the preview command
completes. ANSI escape sequence for clearing the display (\fBCSI 2 J\fR) is
supported, so you can use it to implement preview window that is constantly
updating.
e.g.
\fBfzf --preview 'for i in $(seq 100000); do
(( i % 200 == 0 )) && printf "\\033[2J"
echo "$i"
sleep 0.01
done'\fR
.RE
.TP
.BI "--preview-window=" "[POSITION][:SIZE[%]][:rounded|sharp|noborder][:[no]wrap][:[no]cycle][:[no]hidden][:+SCROLL[-OFFSET]][:default]"
@@ -389,7 +401,6 @@ query if any of the placeholder expressions evaluates to a non-empty string.
\fBdown
\fBleft
\fBright
.RE
\fRDetermines the layout of the preview window. If the argument contains
\fB:hidden\fR, the preview window will be hidden by default until