Syntax highlight definition for Atlassian Fisheye and Crucible. Save the file in <FISHEYE_INST>/syntax and update <FISHEYE_INST>/syntax/filemap to objective-c file extensions.

objectivec.def

# Objective-C Syntax Highliht for Atlassian Fisheye and Crucible
# Based on Atlassian's C syntax highlight
# Author: Felipe Cypriano <[email protected]>

#   Copyright 2010 Felipe Cypriano
#   
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#   
#       http://www.apache.org/licenses/LICENSE-2.0
#   
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.

syntaxdef objectivec {

/\s+/m : ;

# keywords
/(@(c(atch|lass)|dynamic|en(code|d)|finally|i(mplementation|nterface)|p(r(ivate|otected)|ublic)|s(elector|ynthesize)|t(hrow|ry))|\
auto|break|c(a(se|tch)|har|lass|o(py|n(st|tinue)))|d(efault|o(|uble))|\
e(lse|num|xtern)|f(loat|or)|goto|i(f|nt)|long|n(il|onatomic)|re(adonly|adwrite|gister|turn)|\
s(elf|hort|i(gned|zeof)|t(atic|ruct)|uper|witch)|t(rue|ypedef)|un(ion|signed|til)|\
vo(id|latile)|while|\
BOOL|FALSE|IB(Action|Outlet)|N(O|ULL)|SEL|TRUE|YES)\b/ : {
       region {
         type=keyword;
         index=word;
       }
    }


# preprocessor line
/^#.*$/m : {
       region {
         type=keyword;
       }
    }

# char literal
/L?'(\\.|\\[0-7]{3}|\\x[0-9a-fA-F]{2}|.)'/ : {
       region {
          type=char_literal;
       }

    }

# string literal
/L?"/ : {
    context {
        /\\./: ;
        /$/m : exit;
        "\"" : exit;
    }
    region ${ALL} {
           type=string;
    }
}

#numeric literal
/(0x[0-9a-f]+(lu|ul|[ul])?)|((([0-9]+\.?)|([0-9]*\.[0-9]+))(e(\+|-)?[0-9]+)?(fl|lf|[lf])?)/i : {
       region {
          type=numeric;
       }
   }

# identifier
/[a-zA-Z_][a-zA-Z_0-9]*/ : {
      region {
         type=identifier;
         index=word;
      }
   }


# comment
/\/\*.*?\*\//s : {
      region {
         type=comment;
         index=prose;
         findlinks=true;
      }
    }

# inline comment
/\/\/.*$/m : {
      region {
         type=comment;
         index=prose;
         findlinks=true;
      }
   }
}

Indeed, this is a syntax definition. Nothing else. Also, this gist was already pulled into FishEye.