Here is the revised patch. Ben
diff --git a/lib/target.exp b/lib/target.exp
index 2620e30..dc0f5c4 100644
--- a/lib/target.exp
+++ b/lib/target.exp
@@ -20,7 +20,7 @@
# extensively modified by Bob Manson <man...@cygnus.com>.
# A hairy pattern to recognize text.
-set text "\[- A-Za-z0-9\.\;\"\_\:\'\`\(\)\!\#\=\+\?\&\*]"
+set text {[ [:alnum:][:punct:]]}
# This is a collection of support procs for the target data
# structures. We use a named array, since Tcl has no real data
diff --git a/runtest.exp b/runtest.exp
index 09ffcf0..0352297 100644
--- a/runtest.exp
+++ b/runtest.exp
@@ -105,8 +105,8 @@ unset -nocomplain env(CCACHE_NODISABLE)
#
# some convenience abbreviations
#
-set hex "0x\[0-9A-Fa-f\]+"
-set decimal "\[0-9\]+"
+set hex {0x[[:xdigit:]]+}
+set decimal {[[:digit:]]+}
#
# set the base dir (current working directory)
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