r181521 - [doc parsing]: So, in this patch, single character

[jahanian]

On May 9, 2013, at 10:01 AM, Dmitri Gribenko <gribozavr at gmail.com> wrote:

> On Thu, May 9, 2013 at 7:44 PM, Fariborz Jahanian <fjahanian at apple.com> wrote:
>> Author: fjahanian
>> Date: Thu May  9 11:44:02 2013
>> New Revision: 181521
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=181521&view=rev
>> Log:
>> [doc parsing]: So, in this patch, single character
>> 'commands' will not go through typo fixit logic,
>> preserving the old behavior (no typo, no diagnostics).
>> // rdar://12381408
>> 
>> Modified:
>>    cfe/trunk/lib/AST/CommentCommandTraits.cpp
>>    cfe/trunk/lib/AST/CommentLexer.cpp
>> 
>> Modified: cfe/trunk/lib/AST/CommentCommandTraits.cpp
>> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/CommentCommandTraits.cpp?rev=181521&r1=181520&r2=181521&view=diff
>> ==============================================================================
>> --- cfe/trunk/lib/AST/CommentCommandTraits.cpp (original)
>> +++ cfe/trunk/lib/AST/CommentCommandTraits.cpp Thu May  9 11:44:02 2013
>> @@ -49,10 +49,6 @@ HelperTypoCorrectCommandInfo(SmallVector
>>   const unsigned MaxEditDistance = 1;
>>   unsigned BestEditDistance = MaxEditDistance + 1;
>>   StringRef Name = Command->Name;
>> -  // Don't attempt trying to typo fix single character commands.
>> -  // \t and \n are very common
>> -  if (Name.size() <= 1)
>> -    return;
>> 
>>   unsigned MinPossibleEditDistance = abs((int)Name.size() - (int)Typo.size());
>>   if (MinPossibleEditDistance > 0 &&
>> 
>> Modified: cfe/trunk/lib/AST/CommentLexer.cpp
>> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/CommentLexer.cpp?rev=181521&r1=181520&r2=181521&view=diff
>> ==============================================================================
>> --- cfe/trunk/lib/AST/CommentLexer.cpp (original)
>> +++ cfe/trunk/lib/AST/CommentLexer.cpp Thu May  9 11:44:02 2013
>> @@ -355,6 +355,10 @@ void Lexer::lexCommentText(Token &T) {
>>         if (!Info) {
>>           formTokenWithChars(T, TokenPtr, tok::unknown_command);
>>           T.setUnknownCommandName(CommandName);
>> +          // single character command impostures, such as \t or \n must not go
>> +          // through the fixit logic.
>> +          if (CommandName.size() <= 1)
>> +            return;
> 
> But it should still get a pedantic
> diag::warn_unknown_comment_command_name diagnostic.

Are you sure. I intentionally left it out. It is going to be noisy with pedantic.

- Fariborz

> 
> Dmitri
> 
> --
> main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
> (j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/

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