Hi! Issue 8 Draft 2.1, XCU, nl, OPTIONS, -b type: 100997 −b type Specify which logical page body lines shall be numbered. Recognized types and 100998 their meaning are: 100999 a Number all lines. 101000 t Number only non-empty lines. 101001 n No line numbering. 101002 pstring Number only lines that contain the basic regular expression specified in 101003 string. 101004 The default type for logical page body shall be t (text lines numbered).
ENVIRONMENT VARIABLES: 101046 LC_CTYPE Determine the locale for the interpretation of sequences of bytes of text data as 101047 characters (for example, single-byte as opposed to multi-byte characters in 101048 arguments and input files), the behavior of character classes within regular 101049 expressions, and for deciding which characters are in character class graph (for the 101050 −b t, −f t, and −h t options). What? CHANGE HISTORY says: 101098 Issue 5 101099 The option [−f type] is added to the SYNOPSIS. The option descriptions are presented in 101100 alphabetic order. The description of −bt is changed to ``Number only non-empty lines’’. And, indeed, SUSv1, XCU, nl, OPTIONS, -b type, t: Number only lines with text consisting entirely of characters in the current locale’s graph character classification. Which, y'know, great, but that text has been contradictory for 26 years. Axe it? наб
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