29 lines
979 B
Bash
29 lines
979 B
Bash
#!/bin/sh
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set -euf
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if [ -n "${DISPLAY-}" ] && [ -z "${FIFO_UEBERZUG-}" ]; then
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export FIFO_UEBERZUG="${TMPDIR:-/tmp}/lf-ueberzug-$$"
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cleanup() {
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exec 3>&-
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rm -- "$FIFO_UEBERZUG"
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}
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mkfifo -- "$FIFO_UEBERZUG"
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# Execute ueberzug in a loop in case it crashes. Ueberzug dies if its
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# associated window is closed. This breaks image previews when using tmux and
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# reattaching to an existing session.
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while ! ueberzug layer -s <"$FIFO_UEBERZUG"; do :; done &
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# Open the FIFO for writing. FIFO readers receive an EOF once all writers
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# have closed their respective file descriptors. Holding a file descriptor
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# will effectively keep ueberzug alive as long as lf lives.
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exec 3>"$FIFO_UEBERZUG"
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trap cleanup EXIT
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# Start lf without passing in the file descriptor. This is done to avoid the
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# lf server being passed the file descriptor, which would cause ueberzug to
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# live longer than is strictly necessary.
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lf "$@" 3>&-
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else
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exec lf "$@"
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fi
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