Import LinuxCNC source tree

tests/interp/abort-hot-comment/README

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+exercise the (ABORT,<message>) hot comment:
+
+numbered, named and INI parameter substitution in message 
+case preservation
+unwind from oword flow
+
+
+

tests/interp/abort-hot-comment/expected

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+executing
+    1 N..... USE_LENGTH_UNITS(CANON_UNITS_MM)
+    2 N..... SET_G5X_OFFSET(1, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000)
+    3 N..... SET_G92_OFFSET(0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000)
+    4 N..... SET_XY_ROTATION(0.0000)
+    5 N..... SET_FEED_REFERENCE(CANON_XYZ)
+    6 N..... ON_RESET()
+ MixedCase param42=20.000000 named=4711.000000 INI=3.140000
+     (abort, MixedCase param42=#42 named=#<named> INI=#<_ini[a]value>)
+    7 N..... ON_RESET()

tests/interp/abort-hot-comment/test.ini

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+[RS274NGC]
+# enable #<_ini[section]name> expansion
+INI_VARS = 1
+
+# test ini variable expansion in (ABORT, text) comment
+[A]
+VALUE= 3.14
+

tests/interp/abort-hot-comment/test.ngc

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+#42 = 0
+#<named> = 4711
+o100 while [#42 lt 100]
+o200 if [#42 eq 20]
+     (abort, MixedCase param42=#42 named=#<named> INI=#<_ini[a]value>)
+o200 endif
+#42 = [#42 + 1]
+o100 endwhile
+
+M2

tests/interp/abort-hot-comment/test.sh

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+#!/bin/bash
+export PYTHONUNBUFFERED=1
+rs274 -n 2 -i test.ini -g test.ngc 2>&1
+exit 0
+