From c4f0c644fd2d43cfb3c244a11c1afc94341384c4 Mon Sep 17 00:00:00 2001
From: Runxi Yu <me@runxiyu.org>
Date: Mon, 8 Jul 2024 08:00:00 +0800
Subject: Use set -e instead of ensure()

---
 websvgtex | 36 ++++++++++--------------------------
 1 file changed, 10 insertions(+), 26 deletions(-)

diff --git a/websvgtex b/websvgtex
index 76ab139..df4e604 100755
--- a/websvgtex
+++ b/websvgtex
@@ -1,29 +1,13 @@
 #!/bin/sh
 
-err() {
-	{ set +x; } 2>/dev/null
-	echo "$@" >&2
-	exit 1
-}
-
-ensure_noset() {  
-        [ $# -lt 1 ] && return 0
-	$@ || err failed executing: "$@"
-}
-
-ensure() {  
-	{ set +x; } 2>/dev/null
-        [ $# -lt 1 ] && return 0
-	$@ || err failed executing: "$@"
-	{ set -x; } 2>/dev/null
-}
+set -eux
 
 rxrand="$(base64 < /dev/random | tr -d '/+=' | head -c 10)"
 
 opwd="$(pwd)"
 
-ensure_noset mkdir /tmp/websvgtex-$rxrand
-ensure_noset cd /tmp/websvgtex-$rxrand
+mkdir /tmp/websvgtex-$rxrand
+cd /tmp/websvgtex-$rxrand
 
 cat >m.tex <<EOF
 \documentclass[preview]{standalone}
@@ -37,18 +21,18 @@ cat >>m.tex <<EOF
 \end{document}
 EOF
 
+{ set +u; } 2>/dev/null
 if [ -z "$1" ]
 then
 	export_filename="m.svg"
 else
 	export_filename="$1"
 fi
+{ set -u; } 2>/dev/null
 
-{ set -x; } 2>/dev/null
+latex m.tex
+latex m.tex
+dvips m.dvi
+inkscape m.ps --export-plain-svg --export-filename="$export_filename"
 
-ensure latex m.tex
-ensure latex m.tex
-ensure dvips m.dvi
-ensure inkscape m.ps --export-plain-svg --export-filename="$export_filename"
-
-ensure mv "$export_filename" "$opwd"
+mv "$export_filename" "$opwd"
-- 
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