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Viewing changes to image-source/split-tab.sh

Merged my changes with those of Will's up-to-date branch.

I will now branch these changes to allow for a merge proposal to go
ahead without me poisoning it with new code.

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image-source/split-tab.sh
 
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#!/bin/sh
 
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# Takes the name of a PNG file (such as tab.png).
 
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# Splits into 3 images.
 
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BASE=`basename $1 '.png'`
 
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convert "$1" -crop 4x20+0+0 "$BASE-left.png"
 
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convert "$1" -crop 4x20+4+0 "$BASE-mid.png"
 
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convert "$1" -crop 4x20+61+0 "$BASE-right.png"