docs(zutil): \zutil_cs_generate_variant:n accepts variatns of different func.

Author: muzimuzhi

zutil/README.md

@@ -33,10 +33,10 @@
     - expands to `\group_begin: \group_end: ⟨cs⟩ \⟨csname⟩`
 - `l3expan` extras
   - `\zutil_cs_generate_variant:N ⟨cs variant⟩`
-    - similar to `\cs_generate_variant:Nn` but accepts the variant function name as argument
-    - example: `\zutil_cs_generate_variant:N \zutil_set:V`
+    - similar to `\cs_generate_variant:Nn` but accepts the whole variant function, rather than its arg-spec only, as argument
+    - example: `\zutil_cs_generate_variant:N \zutil_func:V`
   - `\zutil_cs_generate_variant:n {⟨cs variants list⟩}`
-    - example: `\zutil_cs_generate_variant:n { \zutil_set:v, \zutil_set:e }`
+    - example: `\zutil_cs_generate_variant:n { \zutil_func_a:v, \zutil_func_b:e }`
 - `l3tl` extras
   - `\zutil_prg_new_conditional_tl_if_in:Nnn \⟨name⟩:⟨arg spec⟩ {⟨test token list⟩} {⟨conditions⟩}`
     - variants `Non`, `NVn`, `Nen`

zutil/testfiles/zutil-l3extras.lvt

@@ -98,9 +98,13 @@
   \exp_args:Nc \zutil_cs_generate_variant:N { ~ \c_space_tl myfun_name:ne }
 }
 
+\OMIT
+\cs_new:Npn \test_tmp:Nn #1#2 { }
+\TIMO
+
 \TEST{\zutil_cs_generate_variant:n}{
   \debug_on:n { log-functions }
-  \zutil_cs_generate_variant:n { \zutil_set:v, \zutil_set:e }
+  \zutil_cs_generate_variant:n { \zutil_set:v, \zutil_set:e, \test_tmp:cf }
 }
 
 \TEST{\zutil_prg_new_conditional_tl_if_in:Nnn}{

zutil/testfiles/zutil-l3extras.tlg

@@ -98,8 +98,8 @@
   }
 
 % Example:
-%     \zutil_cs_generate_variant:N \zutil_set:V
-%     \zutil_cs_generate_variant:n { \zutil_set:v, \zutil_set:e }
+%     \zutil_cs_generate_variant:N \zutil_func:V
+%     \zutil_cs_generate_variant:n { \zutil_func_a:v, \zutil_func_b:e }
 \cs_new_protected:Npn \zutil_cs_generate_variant:N #1
   {
     \cs_if_exist:NF #1