mirror of
git://git.suckless.org/sbase
synced 2024-12-25 16:32:37 +00:00
b3a63a60e4
- Added support for character ranges ( a-z ) - Added support for complementary charset ( -c ), only in delete mode - Added support for octal escape sequences - Unicode now only works when there are no octal escape sequences, otherwise behavior is not predictable at first sight. - tr now supports null characters in the input - Does not yet have support for character classes ( [:upper:] )
68 lines
1.6 KiB
Groff
68 lines
1.6 KiB
Groff
.TH TR 1 sbase\-VERSION
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.SH NAME
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tr \- translate characters
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.SH SYNOPSIS
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.B tr
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.RB [ \-d ] [ \-c ]
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.RB set1
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.P
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.B tr
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.RB set1
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.RI set2
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.SH OPTIONS
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.TP
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.B \-d
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For compatibility. If given, characters in set1 will be deleted from the input and specifying set2 will result in an error.
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.B \-c
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Complementary, causes the specified character set to be inverted, this is all the characters not specified belong to it.
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It only works in conjunction with \-d, because order doesn't make much sense with translation.
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.SH DESCRIPTION
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.B tr
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reads input from stdin replacing every character in
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.B set1
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with the character at the same index in
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.B set2.
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If set2 is not given
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.B tr
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deletes the characters in set1 from the input.
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Sets are specified as strings of characters. Almost all represent themselves but the following ones will be interpreted:
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.TP
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\e\e
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backslash
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.TP
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\ea
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audible BEL
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.TP
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\ef
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form feed
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.TP
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\en
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new line
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.TP
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\er
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return
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.TP
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\et
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horizontal tab
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.TP
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\ev
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vertical tab
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.PP
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If set1 is longer than set2
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.B tr
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will map all the remaining characters to the last one in set2. In case set2 is longer than set1, the remaining characters from set2 will be ignored.
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.B
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Character escape sequences, be them characters or octal numbers, are done preceding the token with a "\\". You may specify three digits or less for it,
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digits will stop being read when a non-octal character or when three characters are read.
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.B
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Use "A-B" for ordered sets fom A to B.
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.B
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.SH NOTES
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.B tr
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is Unicode-aware, but only if you don't specify characters in octal (for example \\012), because else it is not predictable. Does not support character
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classes.
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.SH SEE ALSO
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.IR sed(1)
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.IR awk(1)
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