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3939171)
xrandr will typically fail when switching outputs, if the maximum number is already enabled.
This patch will cause xrandr to be called twice:
- First invocation will only disable outputs, freeing up CRTCs
- Second invocation will only enable outputs
- sed 's!^!--!' "$1" | xargs $XRANDR
+ # sed 1: Prefix arguments with "--"
+ # sed 2: Merge arguments into one line per output
+ # sed 3: Merge into two lines, all --off outputs in the first one
+ sed 's/^/--/' "$1" | sed -e '
+ :START
+ /\n--output/{P;D}
+ s/\n/ /
+ N;bSTART' | sed -e '
+ ### First line
+ / --off/{
+ G
+ # Merge if next line contains --off
+ s/\n\([^\n]* --off\)/ \1/
+ h
+ $!d;b
+ }
+ ### Last line
+ H;x
+ # Merge if previous line contains --mode
+ s/\(--mode [^\n]*\)\n/\1 /
+ h
+ $!d' | xargs -L 1 $XRANDR