|  | @@ -136,7 +136,7 @@ namespace Grpc.Tools
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				|  |  |              new ErrorListFilter
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				|  |  |              {
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				|  |  |                  Pattern = new Regex(
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				|  |  | -                    pattern: "(?'FILENAME'.+)\\((?'LINE'\\d+)\\) ?: ?warning in column=(?'COLUMN'\\d+) ?: ?(?'TEXT'.*)",
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				|  |  | +                    pattern: "^(?'FILENAME'.+?)\\((?'LINE'\\d+)\\) ?: ?warning in column=(?'COLUMN'\\d+) ?: ?(?'TEXT'.*)",
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				|  |  |                      options: RegexOptions.Compiled | RegexOptions.IgnoreCase,
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				|  |  |                      matchTimeout: s_regexTimeout),
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				|  |  |                  LogAction = (log, match) =>
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				|  | @@ -162,7 +162,7 @@ namespace Grpc.Tools
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				|  |  |              new ErrorListFilter
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				|  |  |              {
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				|  |  |                  Pattern = new Regex(
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				|  |  | -                    pattern: "(?'FILENAME'.+)\\((?'LINE'\\d+)\\) ?: ?error in column=(?'COLUMN'\\d+) ?: ?(?'TEXT'.*)",
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				|  |  | +                    pattern: "^(?'FILENAME'.+?)\\((?'LINE'\\d+)\\) ?: ?error in column=(?'COLUMN'\\d+) ?: ?(?'TEXT'.*)",
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				|  |  |                      options: RegexOptions.Compiled | RegexOptions.IgnoreCase,
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				|  |  |                      matchTimeout: s_regexTimeout),
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				|  |  |                  LogAction = (log, match) =>
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				|  | @@ -185,10 +185,10 @@ namespace Grpc.Tools
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				|  |  |  
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				|  |  |              // Example warning without location
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				|  |  |              //../Protos/greet.proto: warning: Import google/protobuf/empty.proto but not used.
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				|  |  | -            new ErrorListFilter 
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				|  |  | +            new ErrorListFilter
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				|  |  |              {
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				|  |  |                  Pattern = new Regex(
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				|  |  | -                    pattern: "(?'FILENAME'.+): ?warning: ?(?'TEXT'.*)",
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				|  |  | +                    pattern: "^(?'FILENAME'.+?): ?warning: ?(?'TEXT'.*)",
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				|  |  |                      options: RegexOptions.Compiled | RegexOptions.IgnoreCase,
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				|  |  |                      matchTimeout: s_regexTimeout),
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				|  |  |                  LogAction = (log, match) =>
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				|  | @@ -211,7 +211,7 @@ namespace Grpc.Tools
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				|  |  |              new ErrorListFilter
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				|  |  |              {
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				|  |  |                  Pattern = new Regex(
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				|  |  | -                    pattern: "(?'FILENAME'.+): ?(?'TEXT'.*)",
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				|  |  | +                    pattern: "^(?'FILENAME'.+?): ?(?'TEXT'.*)",
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				|  |  |                      options: RegexOptions.Compiled | RegexOptions.IgnoreCase,
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				|  |  |                      matchTimeout: s_regexTimeout),
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				|  |  |                  LogAction = (log, match) =>
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				|  | @@ -518,7 +518,7 @@ namespace Grpc.Tools
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				|  |  |              foreach (ErrorListFilter filter in s_errorListFilters)
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				|  |  |              {
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				|  |  |                  Match match = filter.Pattern.Match(singleLine);
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				|  |  | -                
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				|  |  | +
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				|  |  |                  if (match.Success)
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				|  |  |                  {
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				|  |  |                      filter.LogAction(Log, match);
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