diff --git a/doc_src/index.rst b/doc_src/index.rst
index a06e28a1a..bcd5def7e 100644
--- a/doc_src/index.rst
+++ b/doc_src/index.rst
@@ -1048,6 +1048,10 @@ The user can change the settings of ``fish`` by changing the values of certain v
 
 - ``argv``, a list of arguments to the shell or function. ``argv`` is only defined when inside a function call, or if fish was invoked with a list of arguments, like ``fish myscript.fish foo bar``. This variable can be changed by the user.
 
+- ``fish_pid``, the process ID (PID) of the shell.
+
+- ``last_pid``, the process ID (PID) of the last background process.
+
 - ``history``, a list containing the last commands that were entered.
 
 - ``HOME``, the user's home directory. This variable can be changed by the user.
diff --git a/po/sv.po b/po/sv.po
index df482f35e..3a178e5c7 100644
--- a/po/sv.po
+++ b/po/sv.po
@@ -58809,10 +58809,6 @@ msgstr "Hjälp om jokertecken *.*"
 msgid "Help on command substitution (SUBCOMMAND)"
 msgstr "Hjälp om kommandosubstitution (UNDERKOMMANDO)"
 
-#: share/completions/help.fish:32
-msgid "Help on process expansion %JOB"
-msgstr "Hjälp om processexpansion %JOB"
-
 #: share/completions/history.fish:1
 msgid "Match history items that start with the given prefix"
 msgstr ""
diff --git a/share/completions/help.fish b/share/completions/help.fish
index a171f23ba..cb58d120c 100644
--- a/share/completions/help.fish
+++ b/share/completions/help.fish
@@ -22,7 +22,6 @@ complete -c help -x -a expand-command-substitution -d 'Command substitution'
 complete -c help -x -a expand-command-substitution -d 'Command substitution (SUBCOMMAND)'
 complete -c help -x -a expand-home -d 'Home directory expansion ~USER'
 complete -c help -x -a expand-index-range -d 'Index range expansion'
-complete -c help -x -a expand-process -d 'Process expansion %JOB'
 complete -c help -x -a expand-variable -d 'Variable expansion $VARNAME'
 complete -c help -x -a expand-wildcard -d 'Wildcard expansion *.*'
 # Note: This is hard-coded in help.fish - it's not an anchor in the html.
diff --git a/src/parse_constants.h b/src/parse_constants.h
index 1df7cde39..1d03ce1b7 100644
--- a/src/parse_constants.h
+++ b/src/parse_constants.h
@@ -240,9 +240,6 @@ void parse_error_offset_source_start(parse_error_list_t *errors, size_t amt);
 /// Error message when encountering a failed expansion, e.g. for the variable name in for loops.
 #define FAILED_EXPANSION_VARIABLE_NAME_ERR_MSG _(L"Unable to expand variable name '%ls'")
 
-/// Error message when encountering a failed process expansion, e.g. %notaprocess.
-#define FAILED_EXPANSION_PROCESS_ERR_MSG _(L"Unable to find a process '%ls'")
-
 /// Error message when encountering an illegal file descriptor.
 #define ILLEGAL_FD_ERR_MSG _(L"Illegal file descriptor in redirection '%ls'")
 
diff --git a/tests/checks/signal.fish b/tests/checks/signal.fish
index f4e55e926..9b49ceaca 100644
--- a/tests/checks/signal.fish
+++ b/tests/checks/signal.fish
@@ -8,11 +8,11 @@ $fish -c 'begin; exit 5; true; end'
 echo $status
 #CHECK: 5
 
-$fish -c 'kill -SIGHUP %self'
+$fish -c 'kill -SIGHUP $fish_pid'
 echo $status
 #CHECK: 129
 
-$fish -c 'function main; kill -SIGTERM %self; true; end; main'
+$fish -c 'function main; kill -SIGTERM $fish_pid; true; end; main'
 echo $status
 #CHECK: 143