Don't assume we are on the search list.

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: tables
 Title: Formula-Driven Table Generation
-Version: 0.9.29
+Version: 0.9.30
 Author: Duncan Murdoch
 Description: Computes and displays complex tables of summary statistics.
   Output may be in LaTeX, HTML, plain text, or an R

NEWS.md

@@ -1,8 +1,10 @@
-# tables 0.9.29
+# tables 0.9.30
 
 - In a few places `len` was used instead of `length.out` in calls to
 `rep()`, leading to warnings.  Similarly, `rep` was used instead of 
 `replace` in `sample()` (issue #28).
+- `tabular` assumed it was on the search list, and didn't work when
+called as `tables::tabular` (issue #30).
 
 # tables 0.9.28
 

R/tabular.R

@@ -628,10 +628,16 @@ tabular.formula <- function(table, data=NULL, n, suppressLabels=0, ...) {
 		domain = NA)
     if (missing(n) && inherits(data, "data.frame"))
     	n <- nrow(data)
+
+    # We need access to labelSubset() (and perhaps other functions)
+    # when evaluating a table expression. (Issue #30)
+
+    withTableFns <- new.env(parent = if (is.environment(data)) data else environment(table))
+    withTableFns$labelSubset <- labelSubset
     if (is.null(data))
-    	data <- environment(table)
+    	data <- withTableFns
     else if (is.list(data))
-    	data <- list2env(data, parent=environment(table))
+    	data <- list2env(data, parent=withTableFns)
     else if (!is.environment(data))
     	stop("'data' must be a dataframe, list or environment")