diff --git a/share/functions/__fish_complete_pids.fish b/share/functions/__fish_complete_pids.fish
index b670944cf..65ba47946 100644
--- a/share/functions/__fish_complete_pids.fish
+++ b/share/functions/__fish_complete_pids.fish
@@ -5,11 +5,7 @@ function __fish_complete_pids -d "Print a list of process identifiers along with
 	set -l SELF %self
 	
 	# Display the tty if available
-	set -l sed_cmds 's/ *([0-9]+) +([^ ].*[^ ]|[^ ]) +([^ ]+) *$/\1'\t'\2 [\3]/'
-	
 	# But not if it's just question marks, meaning no tty
-	set -l sed_cmds $sed_cmds 's/ *\[\?*\] *$//'
-	
-	ps axc -o pid,ucomm,tty | grep -v '^\s*'$SELF'\s' | tail -n +2 | sed -E "-e "$sed_cmds  ^/dev/null
+	ps axc -o pid,ucomm,tty | grep -v '^\s*'$SELF'\s' | tail -n +2 | string replace -r ' *([0-9]+) +([^ ].*[^ ]|[^ ]) +([^ ]+) *$' '$1\t$2 [$3]' | string replace -r ' *\[\?*\] *$' ''
 end
 
diff --git a/share/functions/__fish_print_hostnames.fish b/share/functions/__fish_print_hostnames.fish
index fbcd8b4f7..b5f06da48 100644
--- a/share/functions/__fish_print_hostnames.fish
+++ b/share/functions/__fish_print_hostnames.fish
@@ -14,7 +14,7 @@ function __fish_print_hostnames -d "Print a list of known hostnames"
 
 	# Print hosts with known ssh keys
 	# Does not match hostnames with @directives specified
-	__fish_sgrep -Eoh '^[^#@|, ]*' ~/.ssh/known_hosts{,2} ^/dev/null | sed -E 's/^\[([^]]+)\]:([0-9]+)$/\1/'
+	__fish_sgrep -Eoh '^[^#@|, ]*' ~/.ssh/known_hosts{,2} ^/dev/null | string replace -r '^\[([^]]+)\]:[0-9]+$' '$1'
 
 	# Print hosts from system wide ssh configuration file
 	if [ -e /etc/ssh/ssh_config ]