Make --help work

See #5361.

share/functions/funced.fish

@@ -13,7 +13,7 @@ end
 
 function funced --description 'Edit function definition'
     set -l options 'h/help' 'e/editor=' 'i/interactive' 's/save'
-    argparse -n funced --min-args=1 --max-args=1 $options -- $argv
+    argparse -n funced --max-args=1 $options -- $argv
     or return
 
     if set -q _flag_help
@@ -21,6 +21,11 @@ function funced --description 'Edit function definition'
         return 0
     end
 
+    if not set -q argv[1]
+        printf (_ "%ls: Expected at least %d args, got only %d\n") funced 1 0
+        return 1
+    end
+
     set funcname $argv[1]
 
     # Check VISUAL first since theoretically EDITOR could be ed.

share/functions/funcsave.fish

@@ -1,6 +1,6 @@
 function funcsave --description "Save the current definition of all specified functions to file"
     set -l options 'h/help'
-    argparse -n funcsave --min-args=1 $options -- $argv
+    argparse -n funcsave $options -- $argv
     or return
 
     if set -q _flag_help
@@ -8,6 +8,11 @@ function funcsave --description "Save the current definition of all specified fu
         return 0
     end
 
+    if not set -q argv[1]
+        printf (_ "%ls: Expected at least %d args, got only %d\n") funcsave 1 0
+        return 1
+    end
+
     if not mkdir -p $__fish_config_dir/functions
         printf (_ "%s: Could not create configuration directory\n") funcsave
         return 1

share/functions/open.fish

@@ -5,7 +5,7 @@
 if not command -sq open
     function open --description "Open file in default application"
         set -l options 'h/help'
-        argparse -n open --min-args=1 $options -- $argv
+        argparse -n open $options -- $argv
         or return
 
         if set -q _flag_help
@@ -13,6 +13,11 @@ if not command -sq open
             return 0
         end
 
+        if not set -q argv[1]
+            printf (_ "%ls: Expected at least %d args, got only %d\n") open 1 0
+            return 1
+        end
+
         if type -q -f cygstart
             for i in $argv
                 cygstart $i

share/functions/realpath.fish

@@ -25,7 +25,7 @@ function realpath -d "return an absolute path without symlinks"
     set -l options 'h/help' 'q/quiet' 'V-version' 's/strip' 'N-no-symlinks' 'z/zero'
     set -a options 'e/canonicalize-existing' 'm/canonicalize-missing' 'L/logical' 'P/physical'
     set -a options 'R-relative-to=' 'B-relative-base='
-    argparse -n realpath --min-args=1 $options -- $argv
+    argparse -n realpath $options -- $argv
     or return
 
     if set -q _flag_help
@@ -42,6 +42,11 @@ function realpath -d "return an absolute path without symlinks"
         return 1
     end
 
+    if not set -q argv[1]
+        printf (_ "%ls: Expected at least %d args, got only %d\n") realpath 1 0
+        return 1
+    end
+
     for path in $argv
         builtin realpath $path
     end