.help translit Mar84 utilities
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NAME
translit -- replace or delete specified characters in a file
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USAGE
translit infile from_string [to_string]
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PARAMETERS
.ls infile
The input file name or template, e.g. "abc" or "abc.*".
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.ls from_string
String containing characters to be mapped. 
If delete is yes then the characters in from_string are deleted from the input
file(s). The from_string may specify a range of characters, e.g. "a-z" or "A-Z".
If the first character of from_string is ^ then the program will operate
on all but the specified characters, e.g. "^a-z" means all but lower case
alphabetic characters.
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.ls to_string
Requested if delete is no, otherwise set to the null string.
Characters in from_string are mapped into characters in to_string.
When to_string is short with respect to from_string, it is padded
by duplicating the last character.
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.ls delete = no
If delete is yes the characters in from_string are deleted from the input
file(s) and no to_string is requested.
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.ls collapse = no
If this switch is set all strings of repeatedly mapped output characters
are squeezed to a single character.
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EXAMPLES
To change all the alphabetic characters in a file from lower to upper
case, writing the result on the standard output:

    cl> translit filename a-z A-Z

To delete the letters a, b, and c from a file:

    cl> translit filename abc de=yes

To replace all but the letters abc in a file with A:

    cl> translit filename ^abc A
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