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smenu(1) General Commands Manual smenu(1) NAME smenu - filter that allows one to interactively select a word from stdin and outputs the selection to stdout. SYNOPSIS [*-h|-help] [*-H|-long_help] [*-?|-u|-usage] [*-V|-version] [-n|-lines|-height [height]] [-i|-in|-inc|-incl|-include... regex] [-e|-ex|-exc|-excl|-exclude... regex] [-m|-msg|-message|-title message] [-a|-attr|-attributes prefix:attr...] [-1|-l1|-level1 regex [attr]] [-2|-l2|-level2 regex [attr]] [-3|-l3|-level3 regex [attr]] [-4|-l4|-level4 regex [attr]] [-5|-l5|-level5 regex [attr]] [-T|-tm|-tag|-tag_mode [delim]] [-z|-zap|-zap_glyphs bytes] [-P|-pm|-pin|-pin_mode [delim]] [-p|-at|-auto_tag] [-N|-number... [regex...]] [-U|-unnumber... [regex...]] [-F|-en|-embedded_number] [-D|-data|-options [parameter...] [-b|-blank] [-M|-middle|-center] [-d|-restore|-delete|-clean|-delete_window|-clean_window] [-c|-col|-col_mode|-column] [-l|-line|-line_mode] [-t|-tab|-tab_mode|-tabulate_mode [cols]] [-w|-wide|-wide_mode] [-C|-cs|-cols|-cols_select... selector...] [-R|-rs|-rows|-rows_select... selector...] [-A|-fc|-first_column regex] [-Z|-lc|-last_column regex] [-g|-gutter [string]] [-k|-ks|-keep_spaces] [-W|-ws|-wd|-word_delimiters|-word_separators bytes] [-L|-ls|-ld|-line-delimiters|-line_separators bytes] [-q|-no_bar|-no-scroll_bar] [-S|-subst... /regex/repl/opts] [-I|-si|-subst_included... /regex/repl/opts] [-E|-se|-subst_excluded... /regex/repl/opts] [-/|-search_method prefix|substring|fuzzy] [-s|-sp|-start|-start_pattern pattern] [-x|-tmout|-timeout type [word] delay] [-X|-htmout|-hidden_timeout type [word] delay] [-r|-auto_validate] [-v|-vb|-visual_bell] selectors ::= col1[-col2],...|row1[-row2],...|RE,... parameter ::= [l|r:<char>]|[a:left|right]|[p:included|all|[w:<num>]| [f:yes|no]|[o:<num>[+]]|[n:<num>]|[i:<num>]|[d:<char>]| [s:<num>]|[h:trim|cut|keep] attr ::= [fg][/bg][,style] RE ::= <char>regex<char> selectors and RE can be freely mixed. <char> in RE is any non-blank ASCII character except ','. Note that some parameters require that others have been previously en- tered in the command line to be accepted. DESCRIPTION This small utility acts as a filter when no input file is given (reads from stdin and writes to stdout) or takes its inputs from that file. All the words read are presented in a scrolling window on the terminal at the current cursor position without having previously cleared the screen. The selection cursor is initially positioned on the first selectable word by default. There are options to explicitly or implicitly include or exclude words using extended regular expressions. Note that when some words are ex- plicitly excluded they can no longer be re-included after. Excluded words are skipped when the selection cursor is moved and can- not be searched for. The -W|-ws|-wd|-word_delimiters|-word_separators option can be used to set the characters (or multibyte sequences) which will be used to de- limit the input words. The default delimiters are: SPACE, \t and \n. The -L|-ls|-ld|-line-delimiters|-line_separators has a similar meaning for lines. Special character sequences formed by a \ followed by one of the char- acters a b t n v f r and \ are understood and have their traditional meanings. UTF-8 sequences introduced by \u and \U are also understood. Warning, when used together, it is important to know that all sequences starting with \U will be interpreted before the start of interpretation of sequences starting with \u. \u can be followed by 2,4,6 or 8 hexadecimal characters composing an UTF-8 bytestring. Here is an example of using \u to compose a lower- case latin e with acute accent: \uc3a9. \U must be followed by exactly 6 hexadecimal digits, including leading zeros, that represent a unicode codepoint according to ISO 10646 UCS-4. The lowercase latin e with acute of the previous example (codepoint U+00E9) can then be represented using the notation: \U0000e9. Note that with most shells, the \ before u and U need to be protected or escaped. Quotations (single and double) in the input stream can be used to ig- nore the word separators so that a group of words are taken as a single entity. Non printable characters in words that are not delimiters are converted to their traditional form (\n for end-of-line, \t for tabulation...) by default. An invalid UTF-8 sequence or other non-printable character will be re- placed by a dot (.) by default. There is nevertheless a possibility to change this substitution charac- ter with another ASCII printable one with the help of the command line option -.|-dot|-invalid. Warning, UTF-8 encoded codepoints are quietly converted into the sub- stitution character when the user locale is not UTF-8 aware like POSIX or C by example. Words containing only spaces, entered directly or resulting from a sub- stitution, are also rejected unless they are not selectable. This al- lows special effects like creating blank lines for example. These words are also kept in column mode, selectable or not. smenu has an option to define a set of characters or UTF-8 sequences which should be ignored when reading words. This can be very useful when dealing with inputs where the EOL sequence consists in more than one character. A typical example is DOS or Windows files with lines ending with CRLF. In such a case one might decide to ignore all CR characters from the input. Moving among words The cursor can be moved in every direction by using the keyboard arrow keys (<-,|v,|^,->) or the vi direction keys (h, j, k and l). HOME, END, PgDn and PgUp can also be used, if available, and have the following meanings: <-, h Previous word CTRL <-, H Start of line |^, k Previous line PgUp, K Previous page HOME First word of the window CTRL HOME, SHIFT HOME, CTRL K First word ->, l Next word CTRL ->, L End of line |v, j Next line PgDn, J Next page END Last word of the window CTRL END, SHIFT END, CTRL J Last word CTRL <-/H (resp. CTRL ->/L) places the cursor so that a maximum number of words (selectable or not) are visible to the left (reps. right) side of the window. If -N|-number, -U|-unnumber or -F|-en|-embedded_number are used, then it becomes possible to directly access a word by entering its number. The numbering created using these option is done before any words sub- stitution done using -S|-subst /regex/repl/opts, -I|-si|-subst_included or -E|-se|-subst_excluded. Using a combination of these options, it is easy to control which words will be numbered by adding a special symbol in it before using smenu and removing it (substituted by nothing) afterward using -I|-si|-subst_included by example. -E|-se|-subst_excluded gives another way to do that, see below or more. Searching for words A word can be searched using different algorithms: prefix, substring of fuzzy. prefix (keys ^ or =): The sequence of characters entered must match the beginning of a word. substring (keys " or '): The sequence of characters entered must match a substring in a word. fuzzy (keys ~ or *): All the characters in the entered sequence must appear in the same order in a word, but need not be consecutive. The case is also ignored. Note that spaces and tabs at the beginning and end of words are ignored when searching for substrings or fuzzy strings. The cursor is placed, if possible, on the first matching word having the minimum number of gaps between the first and last matching character, see the difference between the actions of the s/S and n/N keys below. This method also tolerates intermediate symbols not appearing in the words which will be ignored. If this is the case, the at- tributes of the approximatively matching words are changed into an error versions of them to warn the user to this situation. The erroneous symbols will not be inserted in the search buffer. For example: if the word abcdef is present in the standard in- put, then entering abxcdye puts abcdef in the search buffer and the word is added to the list of matching words and displayed with an error attribute (in red by default). This special state will persist until all the symbols following the first erroneous one are deleted (using backspace) or if ESC is pressed to cancel the search session and clear the search buffer. During a search session, the cursor changes and each character entered is added in (or removed from) the search buffer. The display is re- freshed after each change in this buffer. A 10 seconds timeout (by default) automatically ends the current search session as if the Enter key had been pressed. This timeout is reset each time a new key is hit in search mode. This delay can be config- ured using the search entry in the timers section of the configuration file as shown in the example in the configuration subsection. The slash key (/) can also be used instead of any of these keys. By default it is is programmed to do a fuzzy search but this can be changed by using the command line option (-/|-search_method) or by tun- ing a configuration file, see below. All the words matching the current search buffer are enhanced: The characters present in the current search buffer are highlighted in one way and the other characters in another way. Both of these highlight- ing methods are configurable. If the user has entered the search sequence: o, s, then the matching word "words" will be displayed as words when the fuzzy algorithm is in use depending of the display attributes configured. ENTER and all cursor moves terminate the search session but do not clear the list of the matching words and the search buffer. The user can then use the n/s/SPACE keys (forward) and the N/S keys (backward) to navigate in the list of matching words, In fuzzy search mode, the s/S keys attempt to move the cursor to the next/previous word whose matching part forms a substring of this word. If no such matches exist, s/S and n/N do the same things. To move the cursor to the next/previous fuzzy match, use the n/N/SPACE keys. s means next substring match in this context while n just means next match. If the user hits the HOME or END key during a search session then the list of matching words is reduced to the words starting (respectively) ending with the current search pattern and the window is refreshed. For those who consider HOME and END as non-intuitive, the CTRL A and CTRL Z keys are also available in search mode as an alternative. This behaviour is persistent until the user hit the ESC or ENTER key. For example, if the search pattern in substring mode is sh and the user hits END, then only the words ending with sh will be added in the searched word list and enhanced. Note that when a matching word is selected, its enhanced characters only show one of the multiple matching possibilities. When not in a search session ESC can be also used to clear the list of matching words and to reset the search buffer. In summary, here is the meaning of the special keys in search mode: Keys which clear the list of matching words. Key Meaning Closes the search session ------------------------------------------------------------------- Esc Cancel search Yes ------------------------------------------------------------------- Keys which keep or update the list of matching words. Key Meaning Closes the search session ------------------------------------------------------------------- <- Previous word Yes |^ Previous line Yes CTRL <- Start of line Yes PgUp Previous page Yes CTRL HOME, SHIFT HOME, CTRL K First word Yes -> Next word Yes |v Next line Yes CTRL -> END of line Yes PgDn Next pages Yes CTRL END, SHIFT END, CTRL J Last word Yes HOME, CTRL A Only keep the words No starting with the search pattern END, CTRL Z Only keep the words end- No ing with the search pat- tern INS Tag word No DEL Untag word No ------------------------------------------------------------------- Note that the search buffer is persistent as long as the same search algorithm is used and ESC has not been pressed. Selection and Exit Pressing q gives the possibility to exit without selecting anything. By default, ENTER writes the selected word to stdout when not in search mode otherwise it exits from this mode and does nothing more. If you want to be able to select a word even when in search mode, use the -r|-auto_validate option to change this behavior. Tagging (multiple selections) When the tagging is activated by using the command line -T|-tm|-tag|-tag_mode or -P|-pm|-pin|-pin_mode option, then the keys t, T, INS and DEL can be used to tag/untag some words. These tagged words will then be output on the standard output when ENTER is pressed. t Tag/untag or Pin/unpin the word under the cursor (toggle). T Tag or pin the matching words if any. U Untag or unpin the matching words if any. INS Tag or pin the word under the cursor. DEL Untag or unpin the word under the cursor. Help A small help message can be displayed when hitting ?. This display will last for 10s or until a valid key or ESC is pressed. Scroll bar A scroll bar is displayed at the right of the scrolling window. Its appearance is meant to be classical but it has some particularities: * The scroll bar is not displayed if all the input words fit on only one line. * Otherwise, the scroll bar is always displayed except when the -q op- tion is set. This option completely disables the scroll bar display. * When the scrolling window has only one line, the scroll bar has only 3 states: - v when on all but the last line, indicating that you can go down to see more. - ^ when on the last line. - | otherwise. * When there is more than one line to display, / means that the window displays the first line, \ the last line. | is used to fill the gap, see below the different possible configurations. \ \ ^ ^ \ | | | | / / v / v A + can also appear in the scroll bar in lieu of the vertical bar, giv- ing the relative position of the cursor line in the bunch of input words. Terminal resizing (also see BUGS/LIMITATIONS) The windows is redrawn if the terminal is resized. The redrawing is actually done only 1s after the end of the resizing to avoid artefacts on screen. The cursor will remain on the current selected word but may be displayed at another place in the window. Unicode support This utility is Unicode aware and should be able to display correctly any Unicode character (even double-width ones) as long as the current encoding is UTF-8 (UTF-8 in the output of the locale command). Configuration If a file with adequate permissions and the same name as the executable but prefixed with a dot is present in the current directory or in the user's home directory, then it will be parsed as a ini file. The val- ues read from the file in the home directory will be overridden by the ones read from the local directory (if it is present). Missing and bad keywords are silently skipped. The values read, if valid, override the default hard-coded ones. If a value is invalid an error message is shown and the program termi- nates. The values of the timers must be given in units of 1/10 of a second. Here is an example giving the syntax and the names of the keywords al- lowed: --8<------------------------------------------------------------------ [colors] ; The terminal must have at least 8 colors and/or have attributes like bold ; and reverse for this to be useful ; if not the following settings will be ignored. method=ansi ; classic | ansi (default) cursor=0/2 ; cursor attributes cursor_on_tag=0/2,u ; cursor on tag attributes shift=6,b ; shift symbol attributes message=0/3 ; message (title) attributes bar = 7/4,b ; scroll bar attributes search_field = 0/6 ; search field attributes search_text = 7,bu ; search text attributes match_field = 1,b ; matching words field attributes match_text = 7,bu ; matching words text attributes search_err_field = 1 ; approximate search field attributes search_err_text = 1,r ; approximate search text attributes ; match_err_field = 3 ; approximate matching words field attributes match_err_text = 1 ; approximate matching words text attributes ; include = b ; selectable color attributes exclude = 4/0,u ; non-selectable color attributes tag = 0/5 ; tagged (selected) attributes daccess = 3,b ; direct access tag attributes special1 = 7/4,b ; attributes for the special level 1 special2 = bu ; attributes for the special level 2 special3 = /3,b ; attributes for the special level 3 special4 = 7/4 ; attributes for the special level 4 special5 = 7/2,b ; attributes for the special level 5 [window] lines = 7 ; default number of lines of the window [limits] word_length = 1024 ; arbitrary max length of input words (int) words = 32767 ; arbitrary max number of allowed input ; words (int) columns = 128 ; arbitrary max number of columns (int) [timers] search = 100 ; search timeout in 1/10 s help = 150 ; duration of the help message in 1/10 s window = 7 ; delay before redrawing if the size of the ; terminal's window change in 1/10 s direct_access = 6 ; duration allowed to add a new digit to ; the direct word access number in 1/10 s [misc] default_search_method = substring --8<------------------------------------------------------------------ * The method keyword can take the two possible values displayed above and determines if you want to use the native method (limited to 8 colors) of the ansi method (ISO 8613-6) if your terminal supports more than 8 colors. The default value corresponds to ansi. The attributes syntax is [fg][/bg][,toggles] where fg and bg are num- bers representing the foreground and background color and toggles is a strings which can contain the characters b, d, r, s, u and i standing for bold, dim, reverse, standout, underline and italic. * Spaces are allowed anywhere in the lines and between them, even around the =. * Everything following a ; is ignored. * When undefined, the default limits are: words 32767 word_length 512 columns 256 OPTIONS Not all options may be available, depending on the current context. When smenu is called and before the first option is evaluated, it is in the Main context. Each option can switch to another context in which only a subset of the options is usable. For each parameter described below, the contexts in which the associ- ated option is defined as well as the context to which it leads, if any, are given. An option not defined in a context will force the end of the current context and will be recursively evaluated in the previous contexts un- til found (or not). If not found, an error message is displayed and smenu is terminated. The contexts defined in smenu are: Main The default context Columns After the -c|-col|-col_mode|-column parameter. Lines After the -l|-line|-line_mode parameter. Tabulations After the -t|-tab|-tab_mode|-tabulate_mode parameter. Tagging After the -T|-tm|-tag|-tag_mode or -P|-pm|-pin|-pin_mode parameter. WARNING Here is a situation that may seem confusing at first glance. Imagine the only parameter command line parameter is -cols_select. Since this is a parameter of an option which is not valid when not in the Columns context, it should have raised an error but it still seems to be accepted. The trick is: when not in column mode -cols_select is indeed not ac- cepted but its prefix (-col) is valid. The options are thus under- stood as: -col -s_select. The same mechanism occurs again as -s is also valid in column mode so the final understanding of the command line is: -col -s _select. In such a case, the user can set the environment variable CTXOPT_DE- BUG which any non-empty content. When run again the following output will appear on the standard error: CTXOPT_DEBUG: Parameter: -cols_select. Evaluation context: Main. CTXOPT_DEBUG: Found a valid parameter as a prefix of -cols_select: -col. CTXOPT_DEBUG: Parameter: -col. Evaluation context: Main. CTXOPT_DEBUG: Switch to context Columns. CTXOPT_DEBUG: Parameter: -s_select. Evaluation context: Columns. CTXOPT_DEBUG: Found a valid parameter as a prefix of -s_select: -s. CTXOPT_DEBUG: Parameter: -s. Evaluation context: Columns. CTXOPT_DEBUG: Argument: _select. The command line: -col -cols_select 1 solves the issue in this case and indicates that only the first column should be selectable. Note, how- ever, that at least one argument for -cols_select is now required: CTXOPT_DEBUG: Parameter: -col. Evaluation context: Main. CTXOPT_DEBUG: Switch to context Columns. CTXOPT_DEBUG: Parameter: -cols_select. Evaluation context: Columns. CTXOPT_DEBUG: Argument: 1. The -h|-help and -?|-u|-usage options now display the help and synopsis of the available options in the current context. Example: smenu -col -u will only show the usage in the Columns context The contexts contain all the non-context-changing options so, in prac- tice, the usage should be intuitive. You may nevertheless have to ad- just some scripts using the old smenu releases as I did in the lvm_menu example. Some of the advantages of this new system of options are: * Long parameter names are allowed One dash is enough, but two are also allowed for compatibility reasons. * An option can be referenced by any number of parameters with short or long names. * Auto checking of missing mandatory options, duplicated option,... * Only options usable in the current context are allowed. This option management system is explained in more detail at https://github.com/p-gen/ctxopt. The description of each command line parameter is as follows: -h|-help (Allowed in all contexts.) Display a context specific help messages and exits. -H|-long_help (Allowed in the "Main" context.) Display a long (non context specific) help messages and exits. -?|-u|-usage (Allowed in all contexts.) Displays a short help message and exits. -V|-version (Allowed in the "Main" context.) The .smenu files in the user's home directory and in the current directory, if present, will be ignored when this option is used. -n|-lines|-height [height] (Allowed in all contexts.) Gives the maximum number of lines in the scrolling selection window. If -n|-lines|-height is not present the number of lines will be set to 5. If -n|-lines|-height is present without argument, then the height of the terminal will be used to determine the number of lines. This remains true even if the terminal is resized. If -n|-lines|-height is present with a numerical argument, this value will be used to determine the number of lines. -i|-in|-inc|-incl|-include... regex (Allowed in all contexts.) Sets the include filter to match the selectable words. All the other words will become implicitly non-selectable (excluded) -i|-in|-inc|-incl|-include can be used more than once with cumu- lative effect. \u and \U sequences can also be used in the regexp. -e|-ex|-exc|-excl|-exclude... regex (Allowed in all contexts.) Sets the exclude filter to match the non-selectable words. All the other selectable words will become implicitly selectable (included) -e|-ex|-exc|-excl|-exclude can be used more than once with cumu- lative effect. This filter has a higher priority than the in- clude filter. The regex selections made using -i|-in|-inc|-incl|-include and/or -e|-ex|-exc|-excl|-exclude are done before the possible words alterations made by -I|-si|-subst_included or -E|-se|-subst_excluded (see below). \u and \U sequences can also be used in the regexp. -m|-msg|-message|-title message (Allowed in all contexts.) Displays a message (title) above the window. If the current lo- cale is not UTF-8, then all UTF-8 characters will be replaced by the substitution character. \u and \U sequences can be used in the message. Note that the message will be truncated if it does not fit on a terminal line. -a|-attr|-attributes prefix:attr... (Allowed in all contexts.) Sets the display attributes of the elements displayed and the cursor. At least one attribute prefixed attribute must be given. prefix can take the following values: i included words. e excluded words. c cursor. b scroll bar. s shift indicator. m message (title). t tagged words. ct cursor on tagged words. sf search field. st search text. sfe approximate search field with error. ste approximate search text with error. mf matching words field. mt matching words text. mfe matching words field with error. mte matching words text with error. da direct access tag. If more than one attribute is given, they must be separated by spaces. Example: -attr i:/5 e:4,br b:7/3,rb c:7/2,b See the the -1|-l1|-level1 option below for the description of the attributes syntax after the colon and an example. -1|-l1|-level1 regex [attr] -2|-l2|-level2 regex [attr] -3|-l3|-level3 regex [attr] -4|-l4|-level4 regex [attr] -5|-l5|-level5 regex [attr] (Allowed in all contexts.) Allows one to give a special display color to up to 5 classes of words specified by regular expressions. They are called special levels. Only selectable words will be considered. By default, the 5 special levels have their foreground color set to red, green, brown/yellow, purple and cyan. All these colors also can be set or modified permanently in the configuration files. See the example file above for an example. The optional second argument (attr) can be used to override the default or configured attributes of each class. Its syntax is the same as the one used in the configuration file: [fg][/bg][,{b|d|r|s|u|i}] | [{b|d|r|s|u|i}] Examples of possible attributes are: 2/0,bu green on black bold underline /2 green background 5 text in purple rb reverse bold \u and \U sequences can be used in the pattern. -z|-zap|-zap_glyphs bytes (Allowed in all contexts.) Initializes a set of UTF-8 characters to be ignored when reading words from stdin or a file. Example: The argument '\u0d\ue282ac,' means: ignore all commas, Euro signs and carriage return characters when reading from stdin or a file. As shown above \u and \U sequences can be used in the bytes set. -T|-tm|-tag|-tag_mode [delim] (Allowed in the following contexts: "Main", "Columns", "Lines", and "Tabulations", switches to the "Tagging" context.) Enables multiple selections or tag mode. In this mode, several selectable words can be selected without leaving the program. The current word can be automatically tagged when the ENTER key is pressed to complete the selection process if the -p|-at|-auto_tag option is also set or if no word has been tagged. All the tagged words (and possibly the world under the cursor) will be sent to stdout separated by the optional argument given after the option -T|-tm|-tag|-tag_mode. Note than this separator can have more than one character, con- tain UTF-8 characters (in native or \u or \U form) and can even contain control character as in $'\n'. A space is used as the default separator if none is given. Caution: To get exactly the same behavior as in version 0.9.11 and earlier, you must also use the -p|-at|-auto_tag option. -P|-pm|-pin|-pin_mode [delim] (Allowed in the following contexts: "Main", "Columns", "Lines", and "Tabulations", switches to the "Tagging" context.) Works like -T|-tm|-tag|-tag_mode but, unlike -T|-tm|-tag|-tag_mode, the output depends on the order in which the words were tagged. In other words, the first tagged word comes first in the output, the second tagged word comes next, and so on. -p|-at|-auto_tag (Allowed in the "Tagging" context.) This option modifies the default behavior of the -T|-tm|-tag|-tag_mode and -P|-pm|-pin|-pin_mode options. An un- tagged word under the cursor will be automatically tagged when ENTER is pressed. -N|-number>da_ctx... [regex] (Allowed in the following contexts: "Main", "Columns", "Lines" and "Tabulation".) This option allows you to number selectable words that match a specific regular expression. These numbers are numbered from 1 and allow direct access to the words. To use this functionality, the user must enter the number which corresponds to the desired entry digit per digit. Each new digit must be added in a time frame of 1/2 seconds (per default) otherwise the number is considered complete and a newly entered digit will start a new number. If the number does not exists, then the cursor is restored to it's initial position. The sub-options of the -D|-data|-options option described below can change the way -N|-number sets and formats the numbers. This option accepts more than one argument and can be used mul- tiple times with cumulative effects. -N|-number, -U|-unnumber and -F|-en|-embedded_number can be mixed. -U|-unnumber>da_ctx... [regex] (Allowed in the following contexts: "Main", "Columns", "Lines" and "Tabulation".) This option allows one to unnumber words. If placed after a previous -N|-number, it can be used to remove the numbering of selected words. If placed before, the word which doesn't match its regular expression will be numbered by default. This mechanism is similar to to the inclusion/exclusion of words by -i|-in|-inc|-incl|-include and -e|-ex|-exc|-excl|-exclude. This option accepts more than one argument and can be used mul- tiple times with cumulative effects. -U|-unnumber, -N|-number and -F|-en|-embedded_number can be mixed. -F|-en|-embedded_number (Allowed in the following contexts: "Main", "Columns", "Lines" and "Tabulation".) This option is similar to -N|-number but does not generate a continuous flow of numbers but extracts them from the word it- self. With this option you can take full control of the numbering of the displayed word. Note that the numbering does not need to be ordered. The resulting word after the extraction of the number must be non empty. Some sub-option are required, see the -D|-data|-options option described below. Notice that for this option to work correctly, all the embedded numbers must have the same number of digits. To get that, a preprocessing may be necessary on the words before using this program. -F|-en|-embedded_number, -N|-number and -U|-unnumber can be mixed. -D|-data|-options [parameter...] (Allowed in the Following contexts: "Main", "Columns", "Lines" and "Tabulations".) This option allows one to change the default behaviour of the -N|-number, -U|-unnumber and -F|-en|-embedded_number options. Its optional parameters are called sub-options and must respect the format x:y where x can be: l (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is the UTF-8 character (in native or \u or \U form) to print before the number. The default is a sin- gle space. r (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is the UTF-8 character (in native or \u or \U form) to print after the number. The default is ). a (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is 'left' (or one of its prefixes) if the number must be left aligned, or 'right' (or one of its prefixes) if it must be right aligned. The default is right. p (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is 'included' or 'all' for the initial padding of the non numbered words. The keyword 'included' means that only included word will be padded while 'all' means pad all words. The default is all. These keywords can be abbreviated. w (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is the width of the number between 1 and 5 in- cluded. f (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y controls if the numbering must follow the last ex- tracted number (defaults to yes) or if it must remain in- dependent. The possible values are yes and no but can be abbrevi- ated. m (-F|-en|-embedded_number option) Here y controls if the numbering of word with missing em- bedded numbers must be done or not (defaults to yes). When this sub-option is set to no, the s and f sub-op- tions are ignored. The possible values are yes and no but can be abbrevi- ated. h (-F|-en|-embedded_number option) Tells what to do with the characters present before the embedded number if any. The allowed directives are: 'trim' which discads them if they form an empty word (only made of spaces and tabula- tions), 'cut' which unconditionally discards them and 'keep' which places them at the beginning of the result- ing word. The default value for this directive is 'keep', these keywords can be abbeviated. o (-F|-en|-embedded_number option) Here y is the offset of the first multibyte character of the number to extract from the word (defaults to 0). If this offset if immediately followed by the character '+', then the parser will look for the first number (if any) after the given offset instead of using its absolute value to extract the number. Note that when the '+' is used, it is necessary that the length of all the numbers to extract have the same size as the algorithm looks for a digit to identify the begin- ning of the number to extract. Hence, for example, 1 should appear as 01 in the input is n is set to 2. n (-F|-en|-embedded_number option) Here y is the number of multibyte characters to extract from the word starting at the offset given by the o sub- option. Example: n:2 will extract and use the first 2 digits of each words from the input stream to number them. i (-F|-en|-embedded_number option) Here y is number of multibyte characters to ignore after the extracted number d (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is a multibyte separator. When present, this di- rective instructs smenu to output the selected numbered word(s) prefixed by its(their) direct access number(s) and the given separator. Only the numbered word(s) will be prefixed. d stands for decorate. This directive can be useful when you want to post- process the output according to its direct access number. s (-F|-en|-embedded_number, -N|-number and -U|-unnumber options) Here y is the direct access number that will be set for the first numbered word. Its value is 1 by default, a value of 0 is possible. Example: -data r:\> l:\< a:l d:_ To number all words with the default parameters, use the syntax: "-N ." which is a shortcut for: "-N . -D l:' ' r:')' a:r p:a" The padding sub-option specifies whether spaces must also be added in front of excluded words or not to improve compactness. When the w sub-option is not given the width of the numbers is determined automatically but if -F|-en|-embedded_number is set and the value of the n sub-option is given then this value is used. -b|-blank (Allowed in all contexts.) Replaces all non-printable characters by a blank. If this re- sults in a blank word, it will be potentially deleted. -.|-dot|-invalid (Allowed in all contexts.) Sets the substitution character for non-printable characters. When this parameter is not used, the default substitution char- acter is a single dot. -M|-middle|-center (Allowed in all contexts.) Centers the display if possible. -d|-restore|-delete|-clean|-delete_window|-clean_window (Allowed in all contexts.) Tells the program to clean up the display before quitting by re- moving the selection window after use as if it was never dis- played. -c|-col|-col_mode|-column (Allowed in the "Main" and "Tagging" contexts, switches to the "Columns" context.) Sets the column mode. In this mode the lines of words do not wrap when the right border of the terminal is reached but only when a special character is read. Some words will not be dis- played without an horizontal scrolling. If such a scrolling is needed, some indications may appear on the left and right edge of the window to help the user to reach the unseen words. In this mode, the width of each column is minimal to keep the maximum information visible on the terminal. -l|-line|-line_mode (Allowed in the "Main" and "Tagging" contexts, switches to the "Lines" context.) Sets the line mode. This mode is the same as column mode but without any column alignment. -t|-tab|-tab_mode|-tabulate_mode [cols] (Allowed in the "Main" and "Tagging" contexts, switches to the "Tabulations" context.) This option sets the tabulation mode and, if a number is speci- fied, attempts to set the number of displayed columns to that number. In this mode, embedded line separators are ignored if not ex- plicitly set with -L|-ls|-ld|-line-delimiters|-line_separators. The options -A|-fc|-first_column and -Z|-lc|-last_column can nevertheless be used to force words to appear in the first (re- spectively last) position of the displayed line. Note that the number of requested columns will be automatically reduced if a word does not fit in the calculated column size. In this mode each column has the same width. -w|-wide|-wide_mode (Allowed in the "Columns" and "Tabulations" contexts.) When -t|-tab|-tab_mode|-tabulate_mode is followed by a number of columns, the default is to compact the columns so that they use the less terminal width as possible. This option enlarges the columns in order to use the whole terminal width. When in column mode, -w|-wide|-wide_mode can be used to force all the columns to have the same size (the largest one). See option -c|-col|-col_mode|-column below. Note that the column's size is only calculated once when the words are displayed for the first time. A terminal resize will not update this value. This choice enables a faster display. -C|-cs|-cols|-cols_select... [i|e]selectors... (Allowed in the "Columns" context.) I and E have the same meaning as i and e. In column mode, this option is useful to restrict the selections to a subset of all columns. Either by including (nothing or i) or by excluding (e) them. Columns can be designated by their number (1 based) or by a reg- ular expression enclosed in delimiter made from any non-blank ASCII character excluding the comma. Range of columns (number or RE) can be given by separated then with a dash. Multiple selectors can be regrouped in one argument using commas to separate them. This option also accepts multiple arguments, each of them being a selector. A selection by regular expressions means that a column contain- ing a word matching any of these expressions will be included or excluded depending on the letter given after the option or be- fore the selector if there is more than one argument. Regular expressions and column numbers can be freely mixed. Regular expression in -C|-cs|-cols|-cols_select and -R|-rs|-rows|-rows_select can contain UTF-8 characters either directly or by using the \u or \U notation. Example of columns selection: -Ci2,3,/X./,5-7 forces the cursor to only navigate in columns 2,3,5,6 and 7 and those containing a two characters word starting with 'X'. If e was used in place of i, all the columns would have been selected except the col- umns 2,3,5,6,7 and those matching the extended regular expres- sion 'X.'. Spaces are allowed in the selection string if they are pro- tected. Other example where multiple selectors are used as multiple ar- guments: ps | smenu -col -cols e/TTY/ e/CMD/ e3 -R|-rs|-rows|-rows_select... selectors... (Allowed in the "Columns" and "Lines" contexts.) Similar to -C|-cs|-cols|-cols_select but for the rows. -C|-cs|-cols|-cols_select and -R|-rs|-rows|-rows_select can be used more than once in a cumulative manner: The selection mode (selection or de-selection) is given by the first occurrence of the options, the other occurrences will only update the selected or de-selected ranges. Once a column or a row has been excluded, it cannot be re-in- cluded. -A|-fc|-first_column regex (Allowed in the following contexts: "Columns", "Lines" and "Tab- ulations".) In column mode, forces all words matching the given regular ex- pression to be the first one in the displayed line. If you want to only rely on this method to build the lines, just specify an empty regex to set the end-of-line separator with -L|-ls|-ld|-line-delimiters|-line_separators '') \u and \U sequences can also be used in the regexp after -A|-fc|-first_column. -Z|-lc|-last_column regex (Allowed in the following contexts: "Columns", "Lines" and "Tab- ulations".) Similar to -A|-fc|-first_column but forces the word to be the latest of its line. The same trick with -L|-ls|-ld|-line-delim- iters|-line_separators can also be used. \u and \U sequences can also be used in the regexp after -Z|-lc|-last_column. -g|-gutter [string] (Allowed in the "Columns" and "Tabulations" contexts.) Replaces the blank after each words in column or tabular mode by a column separator. This separator is extracted from the string argument and each of its (multibyte) character is used one after the other to fill the gutter. If there are more columns that gutter characters then the last character is used for the remaining columns. When not given, the separator defaults to a vertical bar | (or a full height vertical bar if the locale is set to UTF-8). Each character can be given in normal or \u or \U form in the string argument. Example: "|- " will allow one to separate the first two columns with '|', then '-' will be used and ' ' will separate the re- maining columns if any. -k|-ks|-keep_spaces (Allowed in all contexts.) By default, the spaces surrounding the output string will be deleted. This option forces them to be retained. -W|-ws|-wd|-word_delimiters|-word_separators bytes (Allowed in all contexts.) This option can be used to specify the characters (or multibyte sequences) which will be used to delimit the input words. Multibyte sequences (UTF-8) can be natives of using the same ASCII representation used in words (a leading \u or \U following by up to 8 hexadecimal characters for the former and 6 hexadeci- mal characters for the latter). Non-printable characters in arguments should be given using the standard $'' representation. $'\t' stands for the tabulation character for example. The default delimiters are: SPACE, $'\t' and $'\n'. -L|-ls|-ld|-line-delimiters|-line_separators bytes (Allowed in all contexts.) This option can be used to specify the characters (or multibyte sequences) which will be used to delimit the lines in the input stream. Multibyte sequences (UTF-8) can be natives of using the same ASCII representation used in words (a leading \u or \U following by up to 8 hexadecimal characters for the former and 6 hexadeci- mal characters for the latter). Non-printable characters in arguments should be given using the standard $'' representation. $'\n' stands for the newline char- acter for example. The default delimiter is: $'\n'. This option is only useful when the -c|-col|-col_mode|-column or -l option is also set. The characters (or multibyte sequences) passed to -L|-ls|-ld|-line-delimiters|-line_separators are automatically added to the list of word delimiters as if -W|-ws|-wd|-word_de- limiters|-word_separators was also used. \u and \U sequences can also be used here. -q|-no_bar|-no-scroll_bar (Allowed in all contexts.) Prevents the display of the scroll bar. -S|-subst... /regex/repl/[g][v][s] (Allowed in all contexts.) Post-processes the words by applying a regular expression based substitution. The argument must be formatted as in the sed edi- tor. This option can be used more than once. Each substitution will be applied in sequence on each word. This sequence can be stopped if a stop flag is encountered. flags: * The optional trailing g (for global) means that all matching occurrences shall be replaced and not only the first one. * The optional trailing v (for visual) means that the altered words will only be used for display and search. The modifica- tions will not be reflected in the returned word. * The optional trailing s (for stop) means that no more substi- tution will be allowed on this word even if another -S|-subst is used. * The optional trailing i (for ignore case) means that the string search operation should ignore the case for this pat- tern. Small example: R=$(echo a b c | smenu -S /b/B/) will display "a B c" and R will contain B if B is selected meanwhile R=$(echo a b c | smenu -S /b/B/v) will display the same as above but R will contain the original word b if B is selected. In both cases, only the word B will be searchable and not b. -I|-si|-subst_included... /regex/repl/[g][v][s] (Allowed in all contexts.) Post-processes the selectable words by applying a regular ex- pression based substitution (see -S|-subst for details). -E|-se|-subst_excluded... /regex/repl/[g][v][s] (Allowed in all contexts.) Post-processes the excluded (or non-selectable) words by apply- ing a regular expression based substitution (see -S|-subst for details). The / separator that -I|-si|-subst_included and -E|-se|-subst_excluded are using above can be substituted by any other character except SPACE, \t, \f, \n, \r and \v. In the three previous options, regex is a POSIX Extended Regular Expression. For details, please refer to the regex manual page. Additionally \u and \U sequences can also be used in the regexp. If a post-processing action (-S|-subst, -I|-si|-subst_included, -E|-se|-subst_excluded) results in an empty (length 0) word, then we have two cases: in column mode: Substitutions involving empty words can lead to misalign- ments, so it is necessary to prohibit them and terminate the program. These substitutions have to be made with other tools before using this utility. otherwise: The word is simply removed. -/|-search_method search_method (Allowed in all contexts.) Affects the '/' key to a search method. By default '/' is af- fected to 'fuzzy' but the argument can be any prefix of 'pre- fix', 'substring' or 'fuzzy'. -s|-sp|-start|-start_pattern pattern (Allowed in all contexts.) Place the cursor on the first word corresponding to the speci- fied pattern. pattern can be: * A # immediately followed by a number giving the initial posi- tion of the cursor (counting from 0). If the word at this position is excluded, then the first pre- vious non excluded word is selected if it exists, otherwise the first non excluded word is selected. If this number if greater than the number of words, the cursor will be set on the latest selectable position. * A single # or the string #last to set the initial cursor posi- tion to the latest selectable word position. * A string starting with a / indicating that we want the cursor to be set to the first word matching the given regular expres- sion. * A prefix string indicating that we want the cursor to be set on the first word matching the string given (a will match Can- cel by example). Warning, when searching for a prefix or a regular expression, smenu only looks for them after an eventual modification, so for example, the command: smenu -I/c/x/ -s/c <<< "a b c d" won't find c and put the cursor on a but smenu -I/c/x/v -s/c <<< "a b c d" will find it and put the cursor on the x substituting the c on screen only \u and \U sequences can be used in the pattern. -x|-tmout|-timeout type [word] delay -X|-htmout|-hidden_timeout type [word] delay (Allowed in all contexts.) Sets a timeout. Three types of timeout are possible: current: At the timeout, the word under the cursor and/or the tagged words are sent to the standard output if the ENTER key has been pressed quit: At the timeout, nothing is selected as if the q key has been pressed word: At the timeout, the word given after the type is se- lected. Note that this word doesn't need to be part of the words coming from the standard input. Each type can be be shortened as a prefix of its full name ("cur" for "current" of "q" for "quit" per example). The delay must be set in seconds and cannot be above 99999 sec- onds. The remaining time (in seconds) is added at the end of the mes- sage displayed above the selection window and is updated in real time each second. Any key except ENTER, q, Q and ^C resets the timer to its ini- tial value. The -X|-htmout|-hidden_timeout version works like -x|-tmout|-timeout but no periodic remaining messages is dis- played above the selection window. -r|-auto_validate (Allowed in all contexts.) Enables ENTER to validate the selection even in search mode. -v|-vb|-visual_bell (Allowed in all contexts.) By default, when searching, an alarm is produced by the terminal when the user enters a character or makes a move which lead to no result or to an error condition. This argument make this beep visual by briefly showing the cursor. NOTES If tabulators (\t) are embedded in the input, there is no way to re- place them with the original number of spaces. In this case use an- other filter (like expand) to pre-process the data. EXAMPLES 1 Simple Yes/No/Cancel request with "No" as default choice: In bash: read R <<< $(echo "Yes No Cancel" \ | smenu -d -m "Please choose:" -s /N) or R=$(echo "Yes No Cancel" \ | smenu -d -m "Please choose:" -s /N) In ksh: print "Yes No Cancel" \ | smenu -d -m "Please choose:" -s /N \ | read R 2 Get a 3 columns report about VM statistics for the current process in bash/ksh on Linux: R=$(grep Vm /proc/$$/status | expand | smenu -b -W$'\n' -t3 -g -d) 3 Create a one column selection window containing the list of the first 20 LVM physical volumes. At the end, the selection window will be erased. This example is written in ksh). pvs -a -o pv_name --noheadings \ | smenu -m "PV list" -n20 -t1 -d -s //dev/root \ | read R The display will have a look similar to the following with the cursor set on the word /dev/root: PV list /dev/md126 \ /dev/md127 | /dev/root | <- cursor here. /dev/sda2 | /dev/sdb2 | /dev/sdc1 | /dev/sdc2 | /dev/system/homevol / 4 (advanced) Imagine a file named sample.mnu with the following content: --8<--------------------------------- "1 First Entry" "3 Third entry" "2 Second entry" "4 Fourth entry" @@@ "5 Fifth entry" @@@ "0 Exit menu" --8<--------------------------------- Then this quite esoteric command will render it (centered on the screen) as: +----------------------------------+ | Test menu | | | | 1) First Entry 3) Third entry | | 2) Second entry 4) Fourth entry | | 5) Fifth entry | | | | 0) Exit menu | +----------------------------------+ with the cursor on Quit and only the numbers and "Quit" selectable. R=$(smenu -q -d -s/Exit -M -n 30 -c \ -e "@+" -E '/@+/ /' \ -F -D n:1 i:1 \ -m "Test menu" < sample.mnu) The selected entry will be available in R Try to understand it as an exercise. ENVIRONMENT NO_COLOR force a monochrome terminal when set. CTXOPT_DEBUG put the option parser in debug mode. BUGS/LIMITATIONS Some terminal emulators, those notably based on VTE version later than 0.35 (see https://github.com/GNOME/vte/commit/01380d), have a new fea- ture that gives them the possibility to wrap/unwrap already displayed lines when resizing the window. As far as I known, there is no terminfo entry to disable that. On these types of terminals, the automatic re-display of the output of smenu will be disturbed and some artifacts may appear on the screen if the terminal window is resized. AUTHORS (C) 2015-present, Pierre Gentile (p.gen.progs@gmail.com) smenu(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | NOTES | EXAMPLES | ENVIRONMENT | BUGS/LIMITATIONS | AUTHORS
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