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Export FZF_PREVIEW_LINES and FZF_PREVIEW_COLUMNS to preview process

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fzf will still override LINES and COLUMNS as before but they may not
hold the correct values depending on the default shell.

Close #1314
This commit is contained in:
Junegunn Choi
2019-02-22 14:33:29 +09:00
parent 6c32148f90
commit 8dc1377efb
3 changed files with 12 additions and 6 deletions
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7
man/man1/fzf.1
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@@ -288,8 +288,11 @@ EXPRESSION\fR for the details).
e.g. \fBfzf --preview='head -$LINES {}'\fR
\fBls -l | fzf --preview="echo user={3} when={-4..-2}; cat {-1}" --header-lines=1\fR
fzf overrides \fB$LINES\fR and \fB$COLUMNS\fR so that they represent the exact
size of the preview window.
fzf exports \fB$FZF_PREVIEW_LINES\fR and \fB$FZF_PREVIEW_COLUMNS\fR so that
they represent the exact size of the preview window. (It also overrides
\fB$LINES\fR and \fB$COLUMNS\fR with the same values but they can be reset
by the default shell, so prefer to refer to the ones with \fBFZF_PREVIEW_\fR
prefix.)
A placeholder expression starting with \fB+\fR flag will be replaced to the
space-separated list of the selected lines (or the current line if no selection