configure_file: Add support for indented cmakedefine

Optional spaces and/or tabs are now understood between the '#' character
and the 'cmakedefine'/'cmakedefine01' words. This indentation is
preserved in the output lines.

Fixes: #13037

1 files changed, 22 insertions, 0 deletions

diff --git a/Tests/ComplexOneConfig/Executable/complex.cxx b/Tests/ComplexOneConfig/Executable/complex.cxx
index 9e4eaad..9b94962 100644
--- a/Tests/ComplexOneConfig/Executable/complex.cxx
+++ b/Tests/ComplexOneConfig/Executable/complex.cxx
@@ -261,6 +261,12 @@ int main()
   cmPassed("ONE_VAR is defined.");
 #endif
 
+#ifndef ONE_VAR_AND_INDENTED
+  cmFailed("cmakedefine is broken, ONE_VAR_AND_INDENTED is not defined.");
+#else
+  cmPassed("ONE_VAR_AND_INDENTED is defined.");
+#endif
+
 #ifndef ONE_VAR_IS_DEFINED
   cmFailed("cmakedefine, SET or VARIABLE_REQUIRES is broken, "
            "ONE_VAR_IS_DEFINED is not defined.");
@@ -274,6 +280,12 @@ int main()
   cmPassed("ZERO_VAR is not defined.");
 #endif
 
+#ifdef ZERO_VAR_AND_INDENTED
+  cmFailed("cmakedefine is broken, ZERO_VAR_AND_INDENTED is defined.");
+#else
+  cmPassed("ZERO_VAR_AND_INDENTED is not defined.");
+#endif
+
 #ifndef STRING_VAR
   cmFailed("the CONFIGURE_FILE command is broken, STRING_VAR is not defined.");
 #else
@@ -1030,6 +1042,16 @@ int main()
   } else {
     cmFailed("cmakedefine01 is not working for 1");
   }
+  if (SHOULD_BE_ZERO_AND_INDENTED == 0) {
+    cmPassed("cmakedefine01 is working for 0 and indented");
+  } else {
+    cmFailed("cmakedefine01 is not working for 0 and indented");
+  }
+  if (SHOULD_BE_ONE_AND_INDENTED == 1) {
+    cmPassed("cmakedefine01 is working for 1 and indented");
+  } else {
+    cmFailed("cmakedefine01 is not working for 1 and indented");
+  }
 #ifdef FORCE_TEST
   cmFailed("CMake SET CACHE FORCE");
 #else