fix #225: add compatibility with upcoming tibble v3.0.0

r-quantities · Mar 11, 2020 · a1e01bc · a1e01bc
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diff --git a/NEWS.md b/NEWS.md
@@ -2,6 +2,8 @@
 
 * prettier `str` print for units and mixed units; #228 addressing #227
 
+* add compatibility with upcoming tibble v3.0.0; #225
+
 # version 0.6-5
 
 * skip test on CRAN to avoid issues with strict latin1 environments

diff --git a/R/mixed.R b/R/mixed.R
@@ -1,6 +1,6 @@
 .as.mixed_units = function(x) {
 	stopifnot(is.list(unclass(x)))
-	structure(x, class = "mixed_units")
+	structure(x, class = c("mixed_units", "list"))
 }
 
 # constructor function: