Index: clang/docs/ReleaseNotes.rst
===================================================================
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -226,9 +226,11 @@
 ------------------
 - The flag ``-std=c++23`` has been added. This behaves the same as the existing
   flag ``-std=c++2b``.
-
 - ``-dumpdir`` has been implemented to specify auxiliary and dump output
   filenames for features like ``-gsplit-dwarf``.
+- ``-fcaret-diagnostics-max-lines=`` has been added as a driver options, which
+  lets users control the maximum number of source lines printed for a
+  caret diagnostic.
 
 Deprecated Compiler Flags
 -------------------------
Index: clang/include/clang/Driver/Options.td
===================================================================
--- clang/include/clang/Driver/Options.td
+++ clang/include/clang/Driver/Options.td
@@ -2297,6 +2297,11 @@
   Group<f_Group>, Flags<[NoXarchOption, CC1Option, CoreOption]>,
   HelpText<"Set the maximum number of entries to print in a macro expansion backtrace (0 = no limit)">,
   MarshallingInfoInt<DiagnosticOpts<"MacroBacktraceLimit">, "DiagnosticOptions::DefaultMacroBacktraceLimit">;
+def fcaret_diagnostics_max_lines_EQ :
+  Joined<["-"], "fcaret-diagnostics-max-lines=">,
+  Group<f_Group>, Flags<[NoXarchOption, CC1Option, CoreOption]>,
+  HelpText<"Set the maximum number of source lines to show in a caret diagnostic">,
+  MarshallingInfoInt<DiagnosticOpts<"SnippetLineLimit">, "DiagnosticOptions::DefaultSnippetLineLimit">;
 defm merge_all_constants : BoolFOption<"merge-all-constants",
   CodeGenOpts<"MergeAllConstants">, DefaultFalse,
   PosFlag<SetTrue, [CC1Option, CoreOption], "Allow">, NegFlag<SetFalse, [], "Disallow">,
@@ -5941,10 +5946,6 @@
 def ferror_limit : Separate<["-"], "ferror-limit">, MetaVarName<"<N>">,
   HelpText<"Set the maximum number of errors to emit before stopping (0 = no limit).">,
   MarshallingInfoInt<DiagnosticOpts<"ErrorLimit">>;
-def fcaret_diagnostics_max_lines :
-  Separate<["-"], "fcaret-diagnostics-max-lines">, MetaVarName<"<N>">,
-  HelpText<"Set the maximum number of source lines to show in a caret diagnostic">,
-  MarshallingInfoInt<DiagnosticOpts<"SnippetLineLimit">, "DiagnosticOptions::DefaultSnippetLineLimit">;
 def verify_EQ : CommaJoined<["-"], "verify=">,
   MetaVarName<"<prefixes>">,
   HelpText<"Verify diagnostic output using comment directives that start with"
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -6042,6 +6042,7 @@
   Args.AddLastArg(CmdArgs, options::OPT_fmacro_backtrace_limit_EQ);
   Args.AddLastArg(CmdArgs, options::OPT_ftemplate_backtrace_limit_EQ);
   Args.AddLastArg(CmdArgs, options::OPT_fspell_checking_limit_EQ);
+  Args.AddLastArg(CmdArgs, options::OPT_fcaret_diagnostics_max_lines_EQ);
 
   // Pass -fmessage-length=.
   unsigned MessageLength = 0;
Index: clang/test/Driver/caret-diagnostics-max-lines.cpp
===================================================================
--- /dev/null
+++ clang/test/Driver/caret-diagnostics-max-lines.cpp
@@ -0,0 +1,13 @@
+//RUN: not %clang++ -fsyntax-only -fcaret-diagnostics-max-lines=2 %s 2>&1 | FileCheck %s -strict-whitespace
+
+
+static_assert(false &&
+    // Comment
+    true, "");
+
+// CHECK: error: static assertion failed due to requirement
+// CHECK-NEXT: {{^}}    4 | static_assert(false &&{{$}}
+// CHECK-NEXT: {{^}}      |               ~~~~~~~~~~~~{{$}}
+// CHECK-NEXT: {{^}}    5 |     // Comment
+// CHECK-NEXT: {{^}}      |     ~~~~~~~~~~{{$}}
+
Index: clang/test/FixIt/fixit-function-call.cpp
===================================================================
--- clang/test/FixIt/fixit-function-call.cpp
+++ clang/test/FixIt/fixit-function-call.cpp
@@ -1,4 +1,4 @@
-// RUN: not %clang_cc1 -fdiagnostics-parseable-fixits -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines 1 -x c++ %s 2> %t
+// RUN: not %clang_cc1 -fdiagnostics-parseable-fixits -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines=1 -x c++ %s 2> %t
 // RUN: FileCheck %s < %t
 // PR5941
 // END.
Index: clang/test/Misc/caret-diags-multiline.cpp
===================================================================
--- clang/test/Misc/caret-diags-multiline.cpp
+++ clang/test/Misc/caret-diags-multiline.cpp
@@ -1,4 +1,4 @@
-// RUN: not %clang_cc1 -std=c++11 -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines 5 -Wsometimes-uninitialized %s 2>&1 | FileCheck %s --strict-whitespace
+// RUN: not %clang_cc1 -std=c++11 -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines=5 -Wsometimes-uninitialized %s 2>&1 | FileCheck %s --strict-whitespace
 
 void line(int);
 
Index: clang/test/Sema/caret-diags-complex-init.cpp
===================================================================
--- clang/test/Sema/caret-diags-complex-init.cpp
+++ clang/test/Sema/caret-diags-complex-init.cpp
@@ -1,4 +1,4 @@
-// RUN: not %clang_cc1 -std=c++11 -fsyntax-only -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines 5 %s 2>&1 | FileCheck %s -strict-whitespace
+// RUN: not %clang_cc1 -std=c++11 -fsyntax-only -fno-diagnostics-show-line-numbers -fcaret-diagnostics-max-lines=5 %s 2>&1 | FileCheck %s -strict-whitespace
 
 
 //CHECK: {{.*}}: error: excess elements in scalar initializer