[text] Replace \textit with \placeholder

Author: eisenwave

source/text.tex

@@ -4908,7 +4908,7 @@
   lconv* localeconv();
 }
 
-#define @\libmacro{NULL}@ @\textit{see \ref{support.types.nullptr}}@
+#define @\libmacro{NULL}@ @\placeholder{see \ref{support.types.nullptr}}@
 #define @\libmacro{LC_ALL}@ @\seebelow@
 #define @\libmacro{LC_COLLATE}@ @\seebelow@
 #define @\libmacro{LC_CTYPE}@ @\seebelow@
@@ -13160,7 +13160,7 @@
 #define __STDC_VERSION_WCHAR_H__ 202311L
 
 namespace std {
-  using size_t = @\textit{see \ref{support.types.layout}}@;                                             // freestanding
+  using size_t = @\placeholder{see \ref{support.types.layout}}@;                                             // freestanding
   using mbstate_t = @\seebelow@;                                          // freestanding
   using wint_t = @\seebelow@;                                             // freestanding
 
@@ -13234,7 +13234,7 @@
   size_t wcsrtombs(char* dst, const wchar_t** src, size_t len, mbstate_t* ps);
 }
 
-#define @\libmacro{NULL}@ @\textit{see \ref{support.types.nullptr}}@                                                  // freestanding
+#define @\libmacro{NULL}@ @\placeholder{see \ref{support.types.nullptr}}@                                                  // freestanding
 #define @\libmacro{WCHAR_MAX}@ @\seebelow@                                             // freestanding
 #define @\libmacro{WCHAR_MIN}@ @\seebelow@                                             // freestanding
 #define @\libmacro{WEOF}@ @\seebelow@                                                  // freestanding
@@ -13271,7 +13271,7 @@
 
 namespace std {
   using mbstate_t = @\seebelow@;
-  using size_t = @\textit{see \ref{support.types.layout}}@;
+  using size_t = @\placeholder{see \ref{support.types.layout}}@;
 
   size_t mbrtoc8(char8_t* pc8, const char* s, size_t n, mbstate_t* ps);
   size_t c8rtomb(char* s, char8_t c8, mbstate_t* ps);