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authorIngo Schwarze <schwarze@openbsd.org>2022-06-03 12:15:55 +0000
committerIngo Schwarze <schwarze@openbsd.org>2022-06-03 12:15:55 +0000
commitccdf39d9cb63bb341dbb5c88c9090ac8e05b350c (patch)
tree8205e38fed18628857329eecdbd4fda63c7ae21d /regress/roff/ds/Makefile
parent3b52bb8d03ff61274832867c905a80a2761859aa (diff)
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During identifier parsing, handle undefined escape sequences
in the same way as groff: * \\ is always reduced to \ * \. is always reduced to . * other undefined escape sequences are usually reduced to the escape name, for example \G to G, except during the expansion of expanding escape sequences having the standard argument form (in particular \* and \n), in which case the backslash is preserved literally. Yes, this is confusing indeed. For example, the following have the same meaning: * .ds \. and .ds . which is not the same as .ds \\. * \*[\.] and \*[.] which is not the same as \*[\\.] * .ds \G and .ds G which is not the same as .ds \\G * \*[\G] and \*[\\G] which is not the same as \*[G] <- sic! To feel less dirty, have a leaning toothpick, if you are so inclined. This patch also slightly improves the string shown by the "escaped character not allowed in a name" error message.
Diffstat (limited to 'regress/roff/ds/Makefile')
-rw-r--r--regress/roff/ds/Makefile7
1 files changed, 6 insertions, 1 deletions
diff --git a/regress/roff/ds/Makefile b/regress/roff/ds/Makefile
index 773105e8..68a8b3bf 100644
--- a/regress/roff/ds/Makefile
+++ b/regress/roff/ds/Makefile
@@ -1,4 +1,9 @@
-# $OpenBSD: Makefile,v 1.6 2019/02/06 20:54:28 schwarze Exp $
+# $OpenBSD: Makefile,v 1.7 2022/06/03 11:50:25 schwarze Exp $
+#
+# This directory is intended for tests of string *definitions*,
+# in particular testing the behaviour of the .ds and .as macros.
+# Tests of string *expansion* are better placed in the roff/string
+# directory.
REGRESS_TARGETS = append escname nested quoting tab