Rstudio - open help in browser (Ubuntu)

rstudio_help_in_browser.sh

#!/bin/bash
set -e

FILE="/usr/lib/rstudio/resources/app/R/Options.R"
TMP_FILE="$(mktemp)"

if [ ! -f "$FILE" ]; then
  echo "Options.R not found at $FILE"
  exit 1
fi

# Idempotent patch: only if block not yet commented
if grep -qE '^\s*#\.rs\.setOption\("browser",' "$FILE"; then
  echo "Block already commented. Nothing to do."
  exit 0
fi

# Comment the specific browseURL block into temporary file
awk '
BEGIN {in_block=0}
/^\s*\.rs\.setOption\("browser",/ {
    print "#"$0
    in_block=1
    next
}
in_block && /^\s*\{/ {
    print "#"$0
    next
}
in_block && /^\s*\.Call\("rs_browseURL",/ {
    print "#"$0
    next
}
in_block && /^\s*\}\)/ {
    print "#"$0
    in_block=0
    next
}
{ print }
' "$FILE" > "$TMP_FILE"

# Add top comment if not present
if ! grep -q "^# custom browseURL implementation." "$TMP_FILE"; then
    sed -i '1i# custom browseURL implementation.' "$TMP_FILE"
fi

# Move temp file to original with sudo
sudo mv "$TMP_FILE" "$FILE"
sudo chmod 644 "$FILE"

echo "Patched $FILE successfully."