[Rd] Puzzling behavior while testing

[Terry Therneau]

I'm testing a new release of survival, executing the following piece of code:

....
for (testpkg in survdep) {
     z <- testInstalledPackage(testpkg, outDir="tests")
     cat(testpkg, c("Ok", "Failed")[z+1], "\n", file="progress", append=T)
}

The vector survdep contains the names of all 156 packages listed as reverse depends on the 
CRAN page for survival.

All works well except for the packages coin and compareGroups.  If we make the survdep 
list contain only those 2 then the last line above "cat..." fails with "testpkg not 
found".  Running ls() at that point shows a set of variables I didn't define, and no 
evidence of any of "testpkg", "survdep", or anything else I'd defined.  My prompt has been 
changed to "R>" as well.

Any idea what is happening?

Terry Therneau

Here is the text just before starting the loop
 > sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: i686-pc-linux-gnu (32-bit)

locale:
  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=C
  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
  [7] LC_PAPER=C                 LC_NAME=C
  [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] tools     stats     graphics  grDevices utils     datasets  methods
[8] base