Notebook Stdout for R contains missing characters / misinterprets escape codes

[EthanGraber]

I am running a Jupyter notebook with an R kernel.

The stdout from running R commands (specifically, in this scenario, viewing the R documentation) doesn't appear to be handling underline escape codes properly.

Example:

Note how the first few lines contain what appear to be missing characters. E.x.: _�D_�i_�a_�m_�e_�t_�e_�r

Here's the proper output for the same command when entered into my terminal:

[DonJayamanne]

I can replicate this issue at my end, heres ipynb file]

ipynb

{
"cells": [
{
 "cell_type": "code",
 "execution_count": 1,
 "metadata": {
  "vscode": {
   "languageId": "r"
  }
 },
 "outputs": [
  {
   "name": "stdout",
   "output_type": "stream",
   "text": [
    "trees                 package:datasets                 R Documentation\n",
    "\n",
    "_\bD_\bi_\ba_\bm_\be_\bt_\be_\br, _\bH_\be_\bi_\bg_\bh_\bt _\ba_\bn_\bd _\bV_\bo_\bl_\bu_\bm_\be _\bf_\bo_\br _\bB_\bl_\ba_\bc_\bk _\bC_\bh_\be_\br_\br_\by _\bT_\br_\be_\be_\bs\n",
    "\n",
    "_\bD_\be_\bs_\bc_\br_\bi_\bp_\bt_\bi_\bo_\bn:\n",
    "\n",
    "     This data set provides measurements of the diameter, height and\n",
    "     volume of timber in 31 felled black cherry trees.  Note that the\n",
    "     diameter (in inches) is erroneously labelled Girth in the data. It\n",
    "     is measured at 4 ft 6 in above the ground.\n",
    "\n",
    "_\bU_\bs_\ba_\bg_\be:\n",
    "\n",
    "     trees\n",
    "     \n",
    "_\bF_\bo_\br_\bm_\ba_\bt:\n",
    "\n",
    "     A data frame with 31 observations on 3 variables.\n",
    "\n",
    "       ‘[,1]’  ‘Girth’   numeric  Tree diameter (rather than girth, actually) in inches \n",
    "       ‘[,2]’  ‘Height’  numeric  Height in ft                                          \n",
    "       ‘[,3]’  ‘Volume’  numeric  Volume of timber in cubic ft                          \n",
    "      \n",
    "_\bS_\bo_\bu_\br_\bc_\be:\n",
    "\n",
    "     Ryan, T. A., Joiner, B. L. and Ryan, B. F. (1976) _The Minitab\n",
    "     Student Handbook_.  Duxbury Press.\n",
    "\n",
    "_\bR_\be_\bf_\be_\br_\be_\bn_\bc_\be_\bs:\n",
    "\n",
    "     Atkinson, A. C. (1985) _Plots, Transformations and Regression_.\n",
    "     Oxford University Press.\n",
    "\n",
    "_\bE_\bx_\ba_\bm_\bp_\bl_\be_\bs:\n",
    "\n",
    "     require(stats); require(graphics)\n",
    "     pairs(trees, panel = panel.smooth, main = \"trees data\")\n",
    "     plot(Volume ~ Girth, data = trees, log = \"xy\")\n",
    "     coplot(log(Volume) ~ log(Girth) | Height, data = trees,\n",
    "            panel = panel.smooth)\n",
    "     summary(fm1 <- lm(log(Volume) ~ log(Girth), data = trees))\n",
    "     summary(fm2 <- update(fm1, ~ . + log(Height), data = trees))\n",
    "     step(fm2)\n",
    "     ## i.e., Volume ~= c * Height * Girth^2  seems reasonable\n",
    "     "
   ]
  }
 ],
 "source": [
  "?trees\n"
 ]
}
],
"metadata": {
"kernelspec": {
 "display_name": "R",
 "language": "R",
 "name": "ir"
},
"language_info": {
 "codemirror_mode": "r",
 "file_extension": ".r",
 "mimetype": "text/x-r-source",
 "name": "R",
 "pygments_lexer": "r",
 "version": "4.2.1"
},
"orig_nbformat": 4,
"vscode": {
 "interpreter": {
  "hash": "49fdd20b2b68a4dd8ebcbb061b9c04f8e52f6472af90d6159269a7c8abf5d944"
 }
}
},
"nbformat": 4,
"nbformat_minor": 2
}

[amunger]

likely related to #118833

[rebornix]

Merging into #118833