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#!/usr/bin/env bash
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#
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# Author: Makarius
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#
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# DESCRIPTION: expand old Isar command conflations 'hence' and 'thus'
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## diagnostics
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PRG="$(basename "$0")"
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function usage()
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{
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echo
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echo "Usage: isabelle $PRG [FILES|DIRS...]"
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echo
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echo " Recursively find .thy files and expand old Isar command conflations:"
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echo
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echo " hence ~> then have"
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echo " thus ~> then show"
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echo
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echo " Old versions of files are preserved by appending \"~~\"."
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echo
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exit 1
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}
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## process command line
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[ "$#" -eq 0 -o "$1" = "-?" ] && usage
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SPECS="$@"; shift "$#"
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## main
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find $SPECS -name \*.thy -print0 | \
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xargs -0 "$ISABELLE_TOOL" java isabelle.Update_Then
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