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Explain the need to escape placeholders in transform actions

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Junegunn Choi
2025-07-02 22:26:56 +09:00
parent 531dd6fb4f
commit 976001e474
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man/man1/fzf.1
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@@ -1938,6 +1938,17 @@ e.g.
echo "change\-header:Invalid selection"'
\fR
A common mistake when writing a \fBtransform\fR action is not escaping
placeholder expressions when passing them back to fzf. In the following
example, if you don't escape \fB{}\fR, fzf will immediately replace it with the
single-quoted string of the current item. This causes single quotes to appear
in the header and footer, and the script will break if any item contains
double-quote characters.
\fBfzf \-\-bind 'focus:transform:[[ $FZF_ACTION =~ up ]] &&
echo "change\-header()+transform\-footer:echo \\{}" ||
echo "change\-footer()+transform\-header:echo \\{}"'\fR
.SS TRANSFORM IN THE BACKGROUND
Transform actions are synchronous, meaning fzf becomes unresponsive while the