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-rw-r--r--doc/config.texi26
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/config.texi b/doc/config.texi
index aa5e35a..42c0b76 100644
--- a/doc/config.texi
+++ b/doc/config.texi
@@ -7,3 +7,29 @@
@clear PERL
@set SSEDEXT @acronym{GNU} extensions
@set SSED @acronym{GNU} @command{sed}
+
+@c Ugly hack to enable using new texinfo commands '@codequotebacktick'
+@c and '@codequoteundirected' or define empty fallbacks if they are
+@c not available.
+
+@ifclear txicommandconditionals
+@c If we got here, this is a REALLY old texinfo (pre 5.0),
+@c and '@ifcommandnotdefined' is not defined.
+@c Assume these commands are not defined as well.
+@macro codequotebacktick
+@end macro
+@macro codequoteundirected
+@end macro
+@end ifclear
+
+@ifset txicommandconditionals
+@c if we got here, this texinfo supports checking for defined
+@c commands. If these commands aren't available - define empty
+@c fallbacks.
+@ifcommandnotdefined codequotebacktick
+@macro codequotebacktick
+@end macro
+@macro codequoteundirected
+@end macro
+@end ifcommandnotdefined
+@end ifset