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      "patterns": [
        {
          "comment": "do we want a special rule for ( expr )?",
          "match": "=[=~]?|!=?|<|>|&&|\\|\\|",
          "name": "keyword.operator.logical.shell"
        },
        {
          "match": "(?<!\\S)-(nt|ot|ef|eq|ne|l[te]|g[te]|[a-hknoprstuwxzOGLSN])",
          "name": "keyword.operator.logical.shell"
        }
      ]
    },
    "loop": {
      "patterns": [
        {
          "begin": "(?<=^|;|&|\\s)(for)\\s+(?=\\({2})",
          "beginCaptures": {
            "1": {
              "name": "keyword.control.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)done(?=\\s|;|&|$)",
          "endCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.for-loop.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        },
        {
          "begin": "(?<=^|;|&|\\s)(for)\\s+(.+?)\\s+(in)(?=\\s|;|&|$)",
          "beginCaptures": {
            "1": {
              "name": "keyword.control.shell"
            },
            "2": {
              "name": "variable.other.loop.shell",
              "patterns": [
                {
                  "include": "#string"
                }
              ]
            },
            "3": {
              "name": "keyword.control.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)done(?=\\s|;|&|$)",
          "endCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.for-in-loop.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        },
        {
          "begin": "(?<=^|;|&|\\s)(while|until)(?=\\s|;|&|$)",
          "beginCaptures": {
            "1": {
              "name": "keyword.control.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)done(?=\\s|;|&|$)",
          "endCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.while-loop.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        },
        {
          "begin": "(?<=^|;|&|\\s)(select)\\s+((?:[^\\s\\\\]|\\\\.)+)(?=\\s|;|&|$)",
          "beginCaptures": {
            "1": {
              "name": "keyword.control.shell"
            },
            "2": {
              "name": "variable.other.loop.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)(done)(?=\\s|;|&|$)",
          "endCaptures": {
            "1": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.select-block.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        },
        {
          "begin": "(?<=^|;|&|\\s)case(?=\\s|;|&|$)",
          "beginCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)esac(?=\\s|;|&|$)",
          "endCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.case-block.shell",
          "patterns": [
            {
              "begin": "(?<=^|;|&|\\s)in(?=\\s|;|&|$)",
              "beginCaptures": {
                "0": {
                  "name": "keyword.control.shell"
                }
              },
              "end": "(?<=^|;|&|\\s)(?=esac(\\s|;|&|$))",
              "name": "meta.scope.case-body.shell",
              "patterns": [
                {
                  "include": "#comment"
                },
                {
                  "include": "#case-clause"
                },
                {
                  "include": "$self"
                }
              ]
            },
            {
              "include": "$self"
            }
          ]
        },
        {
          "begin": "(?<=^|;|&|\\s)if(?=\\s|;|&|$)",
          "beginCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "end": "(?<=^|;|&|\\s)fi(?=\\s|;|&|$)",
          "endCaptures": {
            "0": {
              "name": "keyword.control.shell"
            }
          },
          "name": "meta.scope.if-block.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        }
      ]
    },
    "math": {
      "patterns": [
        {
          "include": "#variable"
        },
        {
          "match": "\\+{1,2}|-{1,2}|!|~|\\*{1,2}|/|%|<[<=]?|>[>=]?|==|!=|^|\\|{1,2}|&{1,2}|\\?|\\:|,|=|[*/%+\\-&^|]=|<<=|>>=",
          "name": "keyword.operator.arithmetic.shell"
        },
        {
          "match": "0[xX][0-9A-Fa-f]+",
          "name": "constant.numeric.hex.shell"
        },
        {
          "match": "0\\d+",
          "name": "constant.numeric.octal.shell"
        },
        {
          "match": "\\d{1,2}#[0-9a-zA-Z@_]+",
          "name": "constant.numeric.other.shell"
        },
        {
          "match": "\\d+",
          "name": "constant.numeric.integer.shell"
        }
      ]
    },
    "pathname": {
      "patterns": [
        {
          "match": "(?<=\\s|:|=|^)~",
          "name": "keyword.operator.tilde.shell"
        },
        {
          "match": "\\*|\\?",
          "name": "keyword.operator.glob.shell"
        },
        {
          "begin": "([?*+@!])(\\()",
          "beginCaptures": {
            "1": {
              "name": "keyword.operator.extglob.shell"
            },
            "2": {
              "name": "punctuation.definition.extglob.shell"
            }
          },
          "end": "\\)",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.extglob.shell"
            }
          },
          "name": "meta.structure.extglob.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        }
      ]
    },
    "pipeline": {
      "patterns": [
        {
          "match": "(?<=^|;|&|\\s)(time)(?=\\s|;|&|$)",
          "name": "keyword.other.shell"
        },
        {
          "match": "[|!]",
          "name": "keyword.operator.pipe.shell"
        }
      ]
    },
    "redirection": {
      "patterns": [
        {
          "begin": "[><]\\(",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.string.begin.shell"
            }
          },
          "end": "\\)",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.string.end.shell"
            }
          },
          "name": "string.interpolated.process-substitution.shell",
          "patterns": [
            {
              "include": "$self"
            }
          ]
        },
        {
          "match": "(?<![<>])(&>|\\d*>&\\d*|\\d*(>>|>|<)|\\d*<&|\\d*<>)(?![<>])",
          "name": "keyword.operator.redirect.shell"
        }
      ]
    },
    "string": {
      "patterns": [
        {
          "match": "\\\\.",
          "name": "constant.character.escape.shell"
        },
        {
          "begin": "'",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.string.begin.shell"
            }
          },
          "end": "'",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.string.end.shell"
            }
          },
          "name": "string.quoted.single.shell"
        },
        {
          "begin": "\\$?\"",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.string.begin.shell"
            }
          },
          "end": "\"",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.string.end.shell"
            }
          },
          "name": "string.quoted.double.shell",
          "patterns": [
            {
              "match": "\\\\[\\$`\"\\\\\\n]",
              "name": "constant.character.escape.shell"
            },
            {
              "include": "#variable"
            },
            {
              "include": "#interpolation"
            }
          ]
        },
        {
          "begin": "\\$'",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.string.begin.shell"
            }
          },
          "end": "'",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.string.end.shell"
            }
          },
          "name": "string.quoted.single.dollar.shell",
          "patterns": [
            {
              "match": "\\\\(a|b|e|f|n|r|t|v|\\\\|')",
              "name": "constant.character.escape.ansi-c.shell"
            },
            {
              "match": "\\\\[0-9]{3}",
              "name": "constant.character.escape.octal.shell"
            },
            {
              "match": "\\\\x[0-9a-fA-F]{2}",
              "name": "constant.character.escape.hex.shell"
            },
            {
              "match": "\\\\c.",
              "name": "constant.character.escape.control-char.shell"
            }
          ]
        }
      ]
    },
    "support": {
      "patterns": [
        {
          "match": "(?<=^|;|&|\\s)(?::|\\.)(?=\\s|;|&|$)",
          "name": "support.function.builtin.shell"
        },
        {
          "match": "(?<=^|;|&|\\s)(?:alias|bg|bind|break|builtin|caller|cd|command|compgen|complete|dirs|disown|echo|enable|eval|exec|exit|false|fc|fg|getopts|hash|help|history|jobs|kill|let|logout|popd|printf|pushd|pwd|read|readonly|set|shift|shopt|source|suspend|test|times|trap|true|type|ulimit|umask|unalias|unset|wait)(?=\\s|;|&|$)",
          "name": "support.function.builtin.shell"
        }
      ]
    },
    "variable": {
      "patterns": [
        {
          "captures": {
            "1": {
              "name": "punctuation.definition.variable.shell"
            }
          },
          "match": "(\\$)[a-zA-Z_][a-zA-Z0-9_]*",
          "name": "variable.other.normal.shell"
        },
        {
          "captures": {
            "1": {
              "name": "punctuation.definition.variable.shell"
            }
          },
          "match": "(\\$)[-*@#?$!0_]",
          "name": "variable.other.special.shell"
        },
        {
          "captures": {
            "1": {
              "name": "punctuation.definition.variable.shell"
            }
          },
          "match": "(\\$)[1-9]",
          "name": "variable.other.positional.shell"
        },
        {
          "begin": "\\${",
          "beginCaptures": {
            "0": {
              "name": "punctuation.definition.variable.shell"
            }
          },
          "end": "}",
          "endCaptures": {
            "0": {
              "name": "punctuation.definition.variable.shell"
            }
          },
          "name": "variable.other.bracket.shell",
          "patterns": [
            {
              "match": "!|:[-=?]?|\\*|@|#{1,2}|%{1,2}|/",
              "name": "keyword.operator.expansion.shell"
            },
            {
              "captures": {
                "1": {
                  "name": "punctuation.section.array.shell"
                },
                "3": {
                  "name": "punctuation.section.array.shell"
                }
              },
              "match": "(\\[)([^\\]]+)(\\])"
            },
            {
              "include": "#variable"
            },
            {
              "include": "#string"
            }
          ]
        }
      ]
    }
  }
}