diff --git a/themes/barbuk/barbuk.theme.bash b/themes/barbuk/barbuk.theme.bash
index cedb56902d..b3f2827c00 100644
--- a/themes/barbuk/barbuk.theme.bash
+++ b/themes/barbuk/barbuk.theme.bash
@@ -106,7 +106,7 @@ function __git-upstream-remote-logo_prompt() {
 
 function git_prompt_info() {
 	git_prompt_vars
-	echo -e "on $SCM_GIT_CHAR_ICON_BRANCH $SCM_PREFIX$SCM_BRANCH$SCM_STATE$SCM_GIT_AHEAD$SCM_GIT_BEHIND$SCM_GIT_STASH$SCM_SUFFIX "
+	echo "on $SCM_GIT_CHAR_ICON_BRANCH $SCM_PREFIX$SCM_BRANCH$SCM_STATE$SCM_GIT_AHEAD$SCM_GIT_BEHIND$SCM_GIT_STASH$SCM_SUFFIX "
 }
 
 function __exit_prompt() {
@@ -194,7 +194,12 @@ function __python_venv_prompt() {
 	elif [[ -n "${VIRTUAL_ENV_PROMPT:-}" ]]; then
 		python_info="${VIRTUAL_ENV_PROMPT}"
 	elif [[ -f pyproject.toml ]]; then
-		python_info=$(awk -F'"' '/^requires-python/ {print $2}' pyproject.toml)
+		# pyproject.toml has no character restrictions on this field, unlike a
+		# git ref name. Strip anything outside printable ASCII (raw control
+		# characters, e.g. terminal escape sequences) as well as literal
+		# backslash-letter escape sequences written as text (e.g. "\e]...\a"),
+		# which some shells/echo modes can still expand.
+		python_info=$(awk -F'"' '/^requires-python/ {gsub(/[^\40-\176]|\\[a-zA-Z]/, "", $2); print $2}' pyproject.toml)
 		[[ -z "${python_info}" ]] && python_info="py"
 	fi
 
@@ -312,6 +317,7 @@ function __prompt-command() {
 	for segment in $BARBUK_PROMPT; do
 		local info
 		info="$(__"${segment}"_prompt)"
+		info="${info//[[:cntrl:]]/}"
 		[[ -n "${info}" ]] && PS1+="${info}"
 	done