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+# Catch an exception. Returns 0 if the exception in question was caught.
+# The first argument gives the exception to catch, which may be a
+# pattern.
+# This must be within an always-block. A typical set of handlers looks
+# like:
+# {
+# # try block; something here throws exceptions
+# } always {
+# if catch MyExcept; then
+# # Handler code goes here.
+# print Handling exception MyExcept
+# elif catch *; then
+# # This is the way to implement a catch-all.
+# print Handling any other exception
+# fi
+# }
+# As with other languages, exceptions do not need to be handled
+# within an always block and may propagate to a handler further up the
+# call chain.
+#
+# It is possible to throw an exception from within the handler by
+# using "throw".
+#
+# The shell variable $CAUGHT is set to the last exception caught,
+# which is useful if the argument to "catch" was a pattern.
+#
+# Use "function" keyword in case catch is already an alias.
+function catch {
+ if [[ $TRY_BLOCK_ERROR -gt 0 && $EXCEPTION = ${~1} ]]; then
+ (( TRY_BLOCK_ERROR = 0 ))
+ CAUGHT="$EXCEPTION"
+ unset EXCEPTION
+ return 0
+ fi
+
+ return 1
+}
+# Never use globbing with "catch".
+alias catch="noglob catch"
+
+catch "$@"