foreign notation: introduce \isforeign

[topbloke-formulae.git] / article.tex

diff --git a/article.tex b/article.tex
index fb7eab4b2619f8e2d5e7bbdac43d636ed2253fef..67f78900141398a04b4c7aca9dddec33c53190c7 100644 (file)
--- a/article.tex
+++ b/article.tex
@@ -96,6 +96,9 @@
 \newcommand{\baseof}[1]{\base ( #1 ) }
 \newcommand{\depsreqof}[1]{\depsreq ( #1 ) }
 
+\newcommand{\foreign}{\bot}
+\newcommand{\isforeign}[1]{\patchof{#1} = \foreign}
+
 \newcommand{\allpatches}{\Upsilon}
 \newcommand{\assign}{\leftarrow}
 \newcommand{\iassign}{\leftarrow}