ESS: Turn off [TRUNCATED] in ESS R session

Question

I'm running some code in a .Rmd file using M-n v u, but when I do so, my output is truncated. I'd like to turn this feature off, but the only documentation I can find mentioning truncation is for ess-eldoc-abbreviation-style and it's related to the mini-buffer.

Here's an example of what happens. Code

while(my.round <= max.round){

input.restart.file <- paste0(output.dir,"Restart/rstart.round.", my.round - 1, ".rst")
output.restart.file <- paste0(output.dir,"Restart/rstart.round.", my.round, ".rst")

    
if(my.round==1){ #initial set up
    ## Initialize parameter object
    ## Set initial phi value
    parameter <-
        initializeParameterObject(
        genome = genome,
        model = which.model,
        sphi = init_sphi,
        mutation.prior.mean = mutation.prior.mean,
        mutation.prior.sd = mutation.prior.sd, ## should try changing this
        num.mixtures = 1,
        gene.assignment = rep(1, genome.length),
        split.serine = TRUE,
        mixture.definition = mixDef)
    divergence.iteration <- initial.divergence
.
.
.

R Window in Emacs

+ while(my.round <= max.round){
+ 
+     input.restart.file <- paste0(output.dir,"Restart/rstart.round.", my.round - 1, ".rst")
+     output.restart.file <- paste0(output.dir,"Restart/rstart.round.", my.round, ".rst")
+ 
+     
+ if(my.round==1){ #initial set up
+     ## Initialize parameter object.... [TRUNCATED] 

UPDATE: I've now downloaded a copy of the emacs source code and searched for "[TRUNCATED]" and get nothing.

I've also searched my .emacs folders and get the same results.

For what it's worth, I'm running

1. Ubuntu-Mate 20.04
2. GNU Emacs 26.3

• (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.14) of 2020-03-26, modified by Debian

3. ESS version 18.10.2

Answer 1

So it looks like I need to figure out how to modify the options ESS sends to R using .ess.source() and .ess.eval(). Specifically, I need to change the argument

max.deparse.length: integer; is used only if ‘echo’ is ‘TRUE’ and gives
      the maximal number of characters output for the deparse of a
      single expression.

I can do this including the following in the source file I'm working with.

library(default)
default(.ess.source) <- list(max.deparse.length=1E5)
default(.ess.eval) <- list(max.deparse.length=1E5)

(NB: it doesn't work in my .Rprofile because R doesn't know about these libraries until they are some how loaded by emacs-ESS.)