protectMetachar {limma} | R Documentation

## Protect Metacharacters

### Description

Add backslashes before any metacharacters found in a string.

### Usage

    protectMetachar(x)

### Arguments

`x` | character vector

### Details

This function is used to protect strings containing metacharacters so that the metacharacters can be treated as ordinary characters in string matching functions operations.

### Value

A character vector of the same length as `x` in which two backslashes have been inserted before any metacharacter.

### Author(s)

Gordon Smyth

### See Also

An overview of LIMMA functions for reading data is given in 03.ReadingData.

### Examples

    # without protectMetachar, this would be no match
    grep(protectMetachar("Ch1 (mean)"),"Ch1 (mean)")

[Package limma version 2.18.3 Index]