Updated to use cmake string(REGEX REPLACE) when converting git log ou…

…tput (#597)

In the off chance that Git decides to change the output of git log -1 "--pretty=format:%p",
use a regex match and replace in cmake to match consecutive spaces and replace them with a
single ;.

test/core/ExamplesUnitTests/configure_git_mockprogram_files/mockprogram_inout.single_repo_two_parents_version.txt

@@ -6,7 +6,7 @@ MOCK_PROGRAM_RETURN: 0
 MOCK_PROGRAM_OUTPUT: This is the HEAD commit summary line
 MOCK_PROGRAM_INPUT: log -1 --pretty=format:%p HEAD
 MOCK_PROGRAM_RETURN: 0
-MOCK_PROGRAM_OUTPUT: b5678aop c9101hah
+MOCK_PROGRAM_OUTPUT: b5678aop         c9101hah
 MOCK_PROGRAM_INPUT: log -1 --pretty=format:%h [%ad] <%ae> b5678aop
 MOCK_PROGRAM_RETURN: 0
 MOCK_PROGRAM_OUTPUT: b5678aop [Thu Sep 20 19:19:18 2023 -0400] <[email protected]>

tribits/core/package_arch/TribitsGitRepoVersionInfo.cmake

@@ -202,7 +202,7 @@ function(tribits_generate_single_repo_version_string  gitRepoDir
       " with output '${gitCmndOutput}' for sha1 ${gitHeadSha1} of repo ${gitRepoDir}!")
     set(headParentList "Error, could not get commit's parents!")
   else()
-    string(REPLACE " " ";" headParentList "${gitCmndOutput}")
+    string(REGEX REPLACE " +" ";" headParentList "${gitCmndOutput}")
   endif()
 
   list(LENGTH headParentList headNumParents)