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diff --git a/Source/LexerParser/cmCTestProcessesLexer.in.l b/Source/LexerParser/cmCTestProcessesLexer.in.l
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+++ b/Source/LexerParser/cmCTestProcessesLexer.in.l
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+%{
+/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
+ file Copyright.txt or https://cmake.org/licensing for details. */
+/*
+
+This file must be translated to C++ and modified to build everywhere.
+
+Run flex >= 2.6 like this:
+
+ flex --nounistd -DFLEXINT_H --noline --header-file=cmCTestProcessesLexer.h -ocmCTestProcessesLexer.cxx cmCTestProcessesLexer.in.l
+
+Modify cmCTestProcessesLexer.cxx:
+ - remove trailing whitespace: sed -i 's/\s*$//' cmCTestProcessesLexer.h cmCTestProcessesLexer.cxx
+ - remove blank lines at end of file: sed -i '${/^$/d;}' cmCTestProcessesLexer.h cmCTestProcessesLexer.cxx
+ - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmCTestProcessesLexer.cxx
+
+*/
+
+/* IWYU pragma: no_forward_declare yyguts_t */
+
+#ifndef __clang_analyzer__ /* Suppress clang scan-build warnings */
+
+#include "cmCTestProcessesLexerHelper.h"
+
+#include <string>
+
+#include <cstddef>
+
+/*--------------------------------------------------------------------------*/
+%}
+
+%option prefix="cmCTestProcesses_yy"
+
+%option reentrant
+%option noyywrap
+%option nodefault
+%pointer
+
+%s PROCESSES_START
+%s PROCESSES_END
+%s RESOURCE_START
+%s RESOURCE_COUNT
+%s RESOURCE_END
+
+NUMBER [0-9]+
+IDENTIFIER [a-z_][a-z0-9_]*
+
+%%
+
+<INITIAL,PROCESSES_START,RESOURCE_START>{IDENTIFIER}: {
+ BEGIN(RESOURCE_COUNT);
+ yyextra->SetResourceType(std::string(yytext, yyleng - 1));
+}
+
+<INITIAL,PROCESSES_START>{NUMBER} {
+ BEGIN(PROCESSES_END);
+ std::size_t len = yyleng;
+ yyextra->SetProcessCount(std::stoll(yytext, &len, 10));
+}
+
+<RESOURCE_COUNT>{NUMBER} {
+ BEGIN(RESOURCE_END);
+ std::size_t len = yyleng;
+ yyextra->SetNeededSlots(std::stoll(yytext, &len, 10));
+ yyextra->WriteRequirement();
+}
+
+<PROCESSES_END,RESOURCE_END>,+ {
+ BEGIN(RESOURCE_START);
+}
+
+<INITIAL,PROCESSES_START,RESOURCE_START>;+ {
+ BEGIN(PROCESSES_START);
+}
+
+<PROCESSES_END,RESOURCE_END>;+ {
+ BEGIN(PROCESSES_START);
+ yyextra->WriteProcess();
+}
+
+<RESOURCE_START,PROCESSES_END,RESOURCE_END><<EOF>> {
+ yyextra->WriteProcess();
+ return 0;
+}
+
+<INITIAL,PROCESSES_START><<EOF>> {
+ return 0;
+}
+
+<<EOF>> {
+ return 1;
+}
+
+.|\n {
+ return 1;
+}
+
+%%
+
+/*--------------------------------------------------------------------------*/
+
+#endif /* __clang_analyzer__ */