try_compile: Rename SOURCE_FROM_ARG -> SOURCE_FROM_CONTENT

Change the SOURCE_FROM_ARG keyword to try_compile to SOURCE_FROM_CONTENT
(which we can do because it was recently added and hasn't been in a
release yet). The new name should be clearer as to what it does, and
also more consistent with the CONTENT arguments to some other commands.

Also, fix a typo in an error message.

11 files changed, 37 insertions, 35 deletions

diff --git a/Help/command/try_compile.rst b/Help/command/try_compile.rst
index 6cb4f99..2f62917 100644
--- a/Help/command/try_compile.rst
+++ b/Help/command/try_compile.rst
@@ -59,10 +59,10 @@ Try Compiling Source Files
 .. code-block:: cmake
 
   try_compile(<resultVar>
-              <SOURCES <srcfile...>]             |
-               SOURCE_FROM_ARG <name> <content>] |
-               SOURCE_FROM_VAR <name> <var>]     |
-               SOURCE_FROM_FILE <name> <path>    >...
+              <SOURCES <srcfile...>]                 |
+               SOURCE_FROM_CONTENT <name> <content>] |
+               SOURCE_FROM_VAR <name> <var>]         |
+               SOURCE_FROM_FILE <name> <path>        >...
               [NO_CACHE]
               [CMAKE_FLAGS <flags>...]
               [COMPILE_DEFINITIONS <defs>...]
@@ -194,7 +194,7 @@ The options are:
 ``OUTPUT_VARIABLE <var>``
   Store the output from the build process in the given variable.
 
-``SOURCE_FROM_ARG <name> <content>``
+``SOURCE_FROM_CONTENT <name> <content>``
   .. versionadded:: 3.25
 
   Write ``<content>`` to a file named ``<name>`` in the operation directory.
@@ -202,7 +202,7 @@ The options are:
   the contents of the file are dynamically specified. The specified ``<name>``
   is not allowed to contain path components.
 
-  ``SOURCE_FROM_ARG`` may be specified multiple times.
+  ``SOURCE_FROM_CONTENT`` may be specified multiple times.
 
 ``SOURCE_FROM_FILE <name> <path>``
   .. versionadded:: 3.25
@@ -218,10 +218,11 @@ The options are:
   .. versionadded:: 3.25
 
   Write the contents of ``<var>`` to a file named ``<name>`` in the operation
-  directory. This is the same as ``SOURCE_FROM_ARG``, but takes the contents
-  from the specified CMake variable, rather than directly, which may be useful
-  when passing arguments through a function which wraps ``try_compile``. The
-  specified ``<name>`` is not allowed to contain path components.
+  directory. This is the same as ``SOURCE_FROM_CONTENT``, but takes the
+  contents from the specified CMake variable, rather than directly, which may
+  be useful when passing arguments through a function which wraps
+  ``try_compile``. The specified ``<name>`` is not allowed to contain path
+  components.
 
   ``SOURCE_FROM_VAR`` may be specified multiple times.
 
diff --git a/Help/command/try_run.rst b/Help/command/try_run.rst
index 8393e1b..be7c734 100644
--- a/Help/command/try_run.rst
+++ b/Help/command/try_run.rst
@@ -13,10 +13,10 @@ Try Compiling and Running Source Files
 .. code-block:: cmake
 
   try_run(<runResultVar> <compileResultVar>
-          <SOURCES <srcfile...>]             |
-           SOURCE_FROM_ARG <name> <content>] |
-           SOURCE_FROM_VAR <name> <var>]     |
-           SOURCE_FROM_FILE <name> <path>    >...
+          <SOURCES <srcfile...>]                 |
+           SOURCE_FROM_CONTENT <name> <content>] |
+           SOURCE_FROM_VAR <name> <var>]         |
+           SOURCE_FROM_FILE <name> <path>        >...
           [NO_CACHE]
           [CMAKE_FLAGS <flags>...]
           [COMPILE_DEFINITIONS <defs>...]
diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx
index 323790e..cdf8efa 100644
--- a/Source/cmCoreTryCompile.cxx
+++ b/Source/cmCoreTryCompile.cxx
@@ -173,7 +173,7 @@ auto const TryCompileBaseSourcesArgParser =
 
 auto const TryCompileBaseNewSourcesArgParser =
   cmArgumentParser<Arguments>{ TryCompileBaseSourcesArgParser }
-    .Bind("SOURCE_FROM_ARG"_s, &Arguments::SourceFromArg)
+    .Bind("SOURCE_FROM_CONTENT"_s, &Arguments::SourceFromContent)
     .Bind("SOURCE_FROM_VAR"_s, &Arguments::SourceFromVar)
     .Bind("SOURCE_FROM_FILE"_s, &Arguments::SourceFromFile)
   /* keep semicolon on own line */;
@@ -402,10 +402,11 @@ bool cmCoreTryCompile::TryCompileCode(Arguments& arguments,
   }
 
   if (this->SrcFileSignature) {
-    if (arguments.SourceFromArg && arguments.SourceFromArg->size() % 2) {
+    if (arguments.SourceFromContent &&
+        arguments.SourceFromContent->size() % 2) {
       this->Makefile->IssueMessage(
         MessageType::FATAL_ERROR,
-        "SOURCE_FROM_ARG requires exactly two arguments");
+        "SOURCE_FROM_CONTENT requires exactly two arguments");
       return false;
     }
     if (arguments.SourceFromVar && arguments.SourceFromVar->size() % 2) {
@@ -476,12 +477,12 @@ bool cmCoreTryCompile::TryCompileCode(Arguments& arguments,
     } else if (arguments.SourceDirectoryOrFile) {
       sources.emplace_back(*arguments.SourceDirectoryOrFile);
     }
-    if (arguments.SourceFromArg) {
-      auto const k = arguments.SourceFromArg->size();
+    if (arguments.SourceFromContent) {
+      auto const k = arguments.SourceFromContent->size();
       for (auto i = decltype(k){ 0 }; i < k; i += 2) {
-        const auto& name = (*arguments.SourceFromArg)[i + 0];
-        const auto& content = (*arguments.SourceFromArg)[i + 1];
-        auto out = this->WriteSource(name, content, "SOURCES_FROM_ARG");
+        const auto& name = (*arguments.SourceFromContent)[i + 0];
+        const auto& content = (*arguments.SourceFromContent)[i + 1];
+        auto out = this->WriteSource(name, content, "SOURCE_FROM_CONTENT");
         if (out.empty()) {
           return false;
         }
@@ -494,7 +495,7 @@ bool cmCoreTryCompile::TryCompileCode(Arguments& arguments,
         const auto& name = (*arguments.SourceFromVar)[i + 0];
         const auto& var = (*arguments.SourceFromVar)[i + 1];
         const auto& content = this->Makefile->GetDefinition(var);
-        auto out = this->WriteSource(name, content, "SOURCES_FROM_VAR");
+        auto out = this->WriteSource(name, content, "SOURCE_FROM_VAR");
         if (out.empty()) {
           return false;
         }
diff --git a/Source/cmCoreTryCompile.h b/Source/cmCoreTryCompile.h
index d4c9466..3e1e12c 100644
--- a/Source/cmCoreTryCompile.h
+++ b/Source/cmCoreTryCompile.h
@@ -41,7 +41,7 @@ public:
     cm::optional<std::string> TargetName;
     cm::optional<ArgumentParser::NonEmpty<std::vector<std::string>>> Sources;
     cm::optional<ArgumentParser::NonEmpty<std::vector<std::string>>>
-      SourceFromArg;
+      SourceFromContent;
     cm::optional<ArgumentParser::NonEmpty<std::vector<std::string>>>
       SourceFromVar;
     cm::optional<ArgumentParser::NonEmpty<std::vector<std::string>>>
diff --git a/Tests/RunCMake/try_compile/SourceFromBadName-stderr.txt b/Tests/RunCMake/try_compile/SourceFromBadName-stderr.txt
index ef6847c..041f3f1 100644
--- a/Tests/RunCMake/try_compile/SourceFromBadName-stderr.txt
+++ b/Tests/RunCMake/try_compile/SourceFromBadName-stderr.txt
@@ -1,4 +1,4 @@
 CMake Error at SourceFromBadName.cmake:[0-9]+ \(try_compile\):
-  SOURCES_FROM_ARG given invalid filename "bad/name.c"
+  SOURCE_FROM_CONTENT given invalid filename "bad/name.c"
 Call Stack \(most recent call first\):
   CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/try_compile/SourceFromBadName.cmake b/Tests/RunCMake/try_compile/SourceFromBadName.cmake
index e53a73f..44d92fd 100644
--- a/Tests/RunCMake/try_compile/SourceFromBadName.cmake
+++ b/Tests/RunCMake/try_compile/SourceFromBadName.cmake
@@ -1 +1 @@
-try_compile(RESULT SOURCE_FROM_ARG bad/name.c "int main();")
+try_compile(RESULT SOURCE_FROM_CONTENT bad/name.c "int main();")
diff --git a/Tests/RunCMake/try_compile/SourceFromOneArg-stderr.txt b/Tests/RunCMake/try_compile/SourceFromOneArg-stderr.txt
index bebe8bb..8b2248a 100644
--- a/Tests/RunCMake/try_compile/SourceFromOneArg-stderr.txt
+++ b/Tests/RunCMake/try_compile/SourceFromOneArg-stderr.txt
@@ -1,4 +1,4 @@
 CMake Error at SourceFromOneArg.cmake:[0-9]+ \(try_compile\):
-  SOURCE_FROM_ARG requires exactly two arguments
+  SOURCE_FROM_CONTENT requires exactly two arguments
 Call Stack \(most recent call first\):
   CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/try_compile/SourceFromOneArg.cmake b/Tests/RunCMake/try_compile/SourceFromOneArg.cmake
index 39ca11e..5a50499 100644
--- a/Tests/RunCMake/try_compile/SourceFromOneArg.cmake
+++ b/Tests/RunCMake/try_compile/SourceFromOneArg.cmake
@@ -1 +1 @@
-try_compile(RESULT SOURCE_FROM_ARG test.c)
+try_compile(RESULT SOURCE_FROM_CONTENT test.c)
diff --git a/Tests/RunCMake/try_compile/SourceFromThreeArgs-stderr.txt b/Tests/RunCMake/try_compile/SourceFromThreeArgs-stderr.txt
index 2cf201d..5f2ff61 100644
--- a/Tests/RunCMake/try_compile/SourceFromThreeArgs-stderr.txt
+++ b/Tests/RunCMake/try_compile/SourceFromThreeArgs-stderr.txt
@@ -1,4 +1,4 @@
 CMake Error at SourceFromThreeArgs.cmake:[0-9]+ \(try_compile\):
-  SOURCE_FROM_ARG requires exactly two arguments
+  SOURCE_FROM_CONTENT requires exactly two arguments
 Call Stack \(most recent call first\):
   CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/try_compile/SourceFromThreeArgs.cmake b/Tests/RunCMake/try_compile/SourceFromThreeArgs.cmake
index af6340d..196851a 100644
--- a/Tests/RunCMake/try_compile/SourceFromThreeArgs.cmake
+++ b/Tests/RunCMake/try_compile/SourceFromThreeArgs.cmake
@@ -1 +1 @@
-try_compile(RESULT SOURCE_FROM_ARG test.c "int" "main();")
+try_compile(RESULT SOURCE_FROM_CONTENT test.c "int" "main();")
diff --git a/Tests/TryCompile/CMakeLists.txt b/Tests/TryCompile/CMakeLists.txt
index 9396cfa..5f540e9 100644
--- a/Tests/TryCompile/CMakeLists.txt
+++ b/Tests/TryCompile/CMakeLists.txt
@@ -78,7 +78,7 @@ include(old_and_new_signature_tests.cmake)
 
 # try to compile an empty source specified directly
 try_compile(SHOULD_FAIL_DUE_TO_EMPTY_SOURCE
-  SOURCE_FROM_ARG empty.c "")
+  SOURCE_FROM_CONTENT empty.c "")
 if(SHOULD_FAIL_DUE_TO_EMPTY_SOURCE)
   message(SEND_ERROR "Trying to compile an empty source succeeded?")
 endif()
@@ -103,11 +103,11 @@ set(TRY_RUN_EXT_CODE
   "int answer() { return 42; }\n")
 
 try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
-  SOURCE_FROM_ARG main.c "${TRY_RUN_MAIN_CODE}"
-  SOURCE_FROM_ARG answer.c "${TRY_RUN_EXT_CODE}"
+  SOURCE_FROM_CONTENT main.c "${TRY_RUN_MAIN_CODE}"
+  SOURCE_FROM_CONTENT answer.c "${TRY_RUN_EXT_CODE}"
   COMPILE_OUTPUT_VARIABLE COMPILE_OUTPUT)
-EXPECT_COMPILED("SOURCE_FROM_ARG" SHOULD_COMPILE "${COMPILE_OUTPUT}")
-EXPECT_RUN_RESULT("SOURCE_FROM_ARG" SHOULD_EXIT_WITH_ERROR 42)
+EXPECT_COMPILED("SOURCE_FROM_CONTENT" SHOULD_COMPILE "${COMPILE_OUTPUT}")
+EXPECT_RUN_RESULT("SOURCE_FROM_CONTENT" SHOULD_EXIT_WITH_ERROR 42)
 
 try_run(SHOULD_EXIT_WITH_ERROR SHOULD_COMPILE
   SOURCE_FROM_VAR main.c TRY_RUN_MAIN_CODE