[clang] [clang-repl] Lay the foundation of pretty printing for C. (PR #89811)

[Anutosh Bhat via cfe-commits]

================
@@ -571,11 +571,8 @@ StmtResult Parser::ParseExprStatement(ParsedStmtContext 
StmtCtx) {
   }
 
   Token *CurTok = nullptr;
-  // If the semicolon is missing at the end of REPL input, consider if
-  // we want to do value printing. Note this is only enabled in C++ mode
-  // since part of the implementation requires C++ language features.
   // Note we shouldn't eat the token since the callback needs it.
-  if (Tok.is(tok::annot_repl_input_end) && Actions.getLangOpts().CPlusPlus)
+  if (Tok.is(tok::annot_repl_input_end))
----------------
anutosh491 wrote:

Hi,

Landed here as was studying a bit on `annot_repl_input_end`

Curious if this change also calls for a change in the docs ? @vgvassilev 

I see the following 

![image](https://github.com/user-attachments/assets/d6e22a0a-9c17-4859-a1cf-ea09124b6226)


https://github.com/llvm/llvm-project/pull/89811
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