seemingly random "nesting of readline input" warnings

Roger Peng
Fri, 1 Nov 2002 15:06:52 -0800 (PST)

Recently, while using R-patched and now R-1.6.1 (on RedHat Linux 7.1) I've
been getting the following warning in the course of everyday activity:

[... some R activity ...]

In addition: Warning message: 
An unusual circumstance has arisen in the nesting of readline input.
Please report using 

The warning is difficult to reproduce because it seems to appear at random
times, usually after I enter about 100 or so commands into the console.

I noticed that the function which produces this warning, `pushReadline' in
src/unix/sys-std.c, was modified on October 16, 2002 in regards to bug
report PR#2165.  I can't tell if this change is the source of the warning
bit I don't ever recall seeing this warning on earlier versions.

I build R from source using the readline-devel-4.1-9 package which came
with my system.

> version
platform i686-pc-linux-gnu
arch     i686             
os       linux-gnu        
system   i686, linux-gnu  
major    1                
minor    6.1              
year     2002             
month    11               
day      01               
language R                

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