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- uuuunnnneeeexxxxppppaaaannnndddd((((1111)))) uuuunnnneeeexxxxppppaaaannnndddd((((1111))))
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- NNNNAAAAMMMMEEEE
- unexpand - convert spaces to tabs
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- uuuunnnneeeexxxxppppaaaannnndddd [ -a| -t tablist ] [ file..]
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- The _u_n_e_x_p_a_n_d utility copies files or the standard input to the standard
- output, converting blank characters at the beginning of each line into
- the maximum number of tab characters followed by the minimum number of
- space characters needed to fill the same column positions originally
- filled by the translated blank characters. By default, tabstops are set
- at every eighth column position. Each backspace character is copied to
- the output, and causes the column position count for tab calculations to
- be decremented; the count will never be decremented to a value less than
- one.
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- OOOOPPPPTTTTIIIIOOOONNNNSSSS
- The following options are supported:
-
- ----aaaa In addition to translating blank characters at the beginning of each
- line, translate all sequences of two or more blank characters
- immediately preceding a tab stop to the maximum number of tab
- characters followed by the minimum number of space characters needed
- to fill the same column positions originally filled by the
- translated blank characters.
-
- ----tttt _t_a_b_l_i_s_t
- Specify the tab stops. The option-argument tablist must be a single
- argument consisting of a single positive decimal integer or
- multiple positive decimal integers, separated by blank characters or
- commas, in ascending order. If a single number is given, tabs will
- be set _t_a_b_l_i_s_t column positions apart instead of the default 8. If
- multiple numbers are given, the tabs will be set at those specific
- column positions.
-
- Each tab-stop position _N must be an integer value greater than zero,
- and the list must be in strictly ascending order. This is taken to
- mean that, from the start of a line of output, tabbing to position _N
- causes the next character output to be in the (_N+_1)_t_h column
- position on that line. When the -t option is not specified, the
- default is the equivalent of specifying -t 8 (except for the
- interaction with -a, described below).
-
- No space-to-tab character conversions occur for characters at
- positions beyond the last of those specified in a multiple tab-stop
- list.
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- When -t is specified, the presence or absence of the -a option is
- ignored; conversion will not be limited to the processing of leading
- blank characters.
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- PPPPaaaaggggeeee 1111
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- uuuunnnneeeexxxxppppaaaannnndddd((((1111)))) uuuunnnneeeexxxxppppaaaannnndddd((((1111))))
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- OOOOPPPPEEEERRRRAAAANNNNDDDDSSSS
- The following operand is supported:
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- -t _f_i_l_e The pathname of a text file to be used as input.
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- SSSSTTTTDDDDIIIINNNN
- See IIIINNNNPPPPUUUUTTTT FFFFIIIILLLLEEEESSSS....
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- IIIINNNNPPPPUUUUTTTT FFFFIIIILLLLEEEESSSS
- Input files must be text files.
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- EEEENNNNVVVVIIIIRRRROOOONNNNMMMMEEEENNNNTTTT VVVVAAAARRRRIIIIAAAABBBBLLLLEEEESSSS
- The following environment variables affect the execution of _u_n_e_x_p_a_n_d:
-
- _L_A_N_G Provide a default value for the internationalisation variables
- that are unset or null. If _L_A_N_G is unset or null, the corresponding value
- from the implementation-specific default locale will be used. If any of
- the internationalisation variables contains an invalid setting, the
- utility will behave as if none of the variables had been defined.
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- _L_C__A_L_L If set to a non-empty string value, override the values of
- all the other internationalisation variables.
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- _L_C__C_T_Y_P_E Determine the locale for the interpretation of sequences of
- bytes of text data as characters (for example, single- as opposed to
- multi-byte characters in arguments and input files), the processing of
- tab and space characters, and for the determination of the width in
- column positions each character would occupy on a constant-width font
- output device.
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- _L_C__M_E_S_S_A_G_E_S Determine the locale that should be used to affect the
- format and contents of diagnostic messages written to standard error.
-
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- AAAASSSSYYYYNNNNCCCCHHHHRRRROOOONNNNOOOOUUUUSSSS EEEEVVVVEEEENNNNTTTTSSSS
- Default.
-
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- SSSSTTTTDDDDOOOOUUUUTTTT
- The standard output is equivalent to the input files with the specified
- space to tab character conversions.
-
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- SSSSTTTTDDDDEEEERRRRRRRR
- Used only for diagnostic messages.
-
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- OOOOUUUUTTTTPPPPUUUUTTTT FFFFIIIILLLLEEEESSSS
- None.
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- PPPPaaaaggggeeee 2222
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- uuuunnnneeeexxxxppppaaaannnndddd((((1111)))) uuuunnnneeeexxxxppppaaaannnndddd((((1111))))
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- EEEEXXXXTTTTEEEENNNNDDDDEEEEDDDD DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- None.
-
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- EEEEXXXXIIIITTTT SSSSTTTTAAAATTTTUUUUSSSS
- The following exit values are returned:
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- 0 Successful completion.
-
- >0 An error occurred.
-
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- CCCCOOOONNNNSSSSEEEEQQQQUUUUEEEENNNNCCCCEEEESSSS OOOOFFFF EEEERRRRRRRROOOORRRRSSSS
- Default.
-
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- AAAAPPPPPPPPLLLLIIIICCCCAAAATTTTIIIIOOOONNNN UUUUSSSSAAAAGGGGEEEE
- One non-intuitive aspect of _u_n_e_x_p_a_n_d is its restriction to leading spaces
- when neither -a nor -t is specified. Users who desire to always convert
- all spaces in a file can easily alias _u_n_e_x_p_a_n_d to use the -a or -t 8
- option.
-
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- EEEEXXXXAAAAMMMMPPPPLLLLEEEESSSS
- None.
-
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- FFFFUUUUTTTTUUUURRRREEEE DDDDIIIIRRRREEEECCCCTTTTIIIIOOOONNNNSSSS
- None.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- _t_a_b_s, _e_x_p_a_n_d
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- CCCCHHHHAAAANNNNGGGGEEEE HHHHIIIISSSSTTTTOOOORRRRYYYY
- First released in Issue 4.
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- PPPPaaaaggggeeee 3333
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