infocmp(1M) User commands infocmp(1M) NAME infocmp - compare or print out terminfo descriptions SYNOPSIS infocmp [-1cCdDeEFgGiIKlLnpqrtTuUVWx] [-A directory] [-B directory] [-Q en- coding] [-R subset] [-s key] [-v level] [-w width] [terminal-type ... ] DESCRIPTION infocmp reports a human-readable terminal type description from a compiled entry in the terminfo database in a variety of selectable formats, compares such entries to each other, and rewrites an entry to replace "use" expres- sions with the content of other entries by reference. A terminfo entry comprises a list of one or more terminal type identifiers, a human-readable description of the terminal type, and a list of terminal capabilities that characterize its programming interface. In all cases, the program reports Boolean-valued capabilities first, followed by numeric ones, and then string-valued capabilities. Default Options If no options are specified and zero or one terminal-types is specified, infocmp assumes the -I option. If more than one is specified, the program assumes the -d option. Source Listing Options [-I] [-L] [-C] [-r] The -I, -L, and -C options will produce a source listing for each terminal named. -I use terminfo capability codes -L use "long" capability names -C use termcap capability codes -r with -C, include nonstandard capabilities -K with -C, improve BSD compatibility If no terminal-types are given, the environment variable TERM will be used for the terminal name. The source produced by the -C option may be used directly as a termcap en- try, but not all parameterized strings can be changed to the termcap for- mat. infocmp will attempt to convert most of the parameterized informa- tion, and anything not converted will be plainly marked in the output and commented out. These should be edited by hand. For best results when converting to termcap format, you should use both -C and -r. Normally a termcap description is limited to 1023 bytes. infocmp trims away less essential parts to make it fit. If you are converting to one of the (rare) termcap implementations which accept an unlimited size of termcap, you may want to add the -T option. More often however, you must help the termcap implementation, and trim excess whitespace (use the -0 op- tion for that). All padding information for strings will be collected together and placed at the beginning of the string where termcap expects it. Mandatory padding (padding information with a trailing "/") will become optional. All termcap variables no longer supported by terminfo, but which are deriv- able from other terminfo variables, will be output. Not all terminfo capa- bilities will be translated; only those variables which were part of term- cap will normally be output. Specifying the -r option will take off this restriction, allowing all capabilities to be output in termcap form. Nor- mally you would use both the -C and -r options. The actual format used in- corporates some improvements for escaped characters from terminfo format. For a stricter BSD-compatible translation, use the -K option rather than -C. Note that because padding is collected to the beginning of the capability, not all capabilities are output. Mandatory padding is not supported. Be- cause termcap strings are not as flexible, it is not always possible to convert a terminfo string capability into an equivalent termcap format. A subsequent conversion of the termcap file back into terminfo format will not necessarily reproduce the original terminfo source. Some common terminfo parameter sequences, their termcap equivalents, and some terminal types which commonly have such sequences, are: terminfo termcap Terminal Types ---------------------------------------------------- %p1%c %. ansi-m %p1%d %d ansi, vt100 %p1%' '%+%c %+x vt52 %i %iq ansi, vt100 %p1%?%'x'%>%t%p1%'y'%+%; %>xy annarbor4080 %p2...%p1 %r hpgeneric Entry Comparison Options [-d] [-c] [-n] Given -c, -d, or -n, infocmp compares the terminfo description of the first specified terminal-type with those of each of the subsequent operands. If fewer terminal-types than required are specified, infocmp uses the environ- ment variable TERM in their place. If a capability is defined for only one terminal type, the value reported depends on the capability's type: * F for missing Boolean variables * NULL for missing integer or string variables The -c and -d options report string capability values between "'" charac- ters. Use the -q option to distinguish absent and canceled capabilities; see terminfo(5). The comparison option selects the form of report. -d lists each capability that differs between two entries. Each capabil- ity name is followed by ":" and comma-separated capability values, then a period. -c lists each capability that two entries have in common. infocmp ig- nores capabilities missing from either entry. Each capability name is followed by "=", a space, and the capability value, then a period. If the -u option is further specified, infocmp rewrites the descrip- tion of the first type employing "use=" syntax to use the second as a building block. -n lists capabilities that are in none of the given entries. Each capa- bility name is preceded by "!" and followed by a period. Normally only conventional capabilities are shown. Use the -x option to add BSD-compatibility capabilities (names prefixed with "OT"). Use= Option [-u] The -u option produces a terminfo source description of the first terminal terminal-type which is relative to the sum of the descriptions given by the entries for the other terminal-types. It does this by analyzing the dif- ferences between the first terminal-types and the other terminal-types and producing a description with use= fields for the other terminals. In this manner, it is possible to retrofit generic terminfo entries into a termi- nal's description. Or, if two similar terminals exist, but were coded at different times or by different people so that each description is a full description, using infocmp will show what can be done to change one de- scription to be relative to the other. A capability will be printed with an at-sign (@) if it no longer exists in the first terminal-type, but one of the other terminal-type entries con- tains a value for it. A capability's value will be printed if the value in the first terminal-type is not found in any of the other terminal-type en- tries, or if the first of the other terminal-type entries that has this ca- pability gives a different value for the capability than that in the first terminal-type. The order of the other terminal-type entries is significant. Since the terminfo compiler tic does a left-to-right scan of the capabilities, speci- fying two use= entries that contain differing entries for the same capabil- ities will produce different results depending on the order that the en- tries are given in. infocmp will flag any such inconsistencies between the other terminal-type entries as they are found. Alternatively, specifying a capability after a use= entry that contains that capability will cause the second specification to be ignored. Using infocmp to recreate a description can be a useful check to make sure that everything was specified correctly in the original source description. Another error that does not cause incorrect compiled files, but will slow down the compilation time, is specifying extra use= fields that are super- fluous. infocmp will flag any other terminal-type use= fields that were not needed. Changing Databases [-A directory] [-B directory] Like other ncurses utilities, infocmp looks for the terminal descriptions in several places. You can use the TERMINFO and TERMINFO_DIRS environment variables to override the compiled-in default list of places to search. See curses(3X), as well as the Fetching Compiled Descriptions section in terminfo(5). You can also use the options -A and -B to override the list of places to search when comparing terminal descriptions: * The -A option sets the location for the first terminal-type * The -B option sets the location for the other terminal-types. Using these options, it is possible to compare descriptions for a terminal with the same name located in two different databases. For instance, you can use this feature for comparing descriptions for the same terminal cre- ated by different people. Other Options -0 causes the fields to be printed on one line, without wrapping. -1 causes the fields to be printed out one to a line. Otherwise, the fields will be printed several to a line to a maximum width of 60 characters. -a tells infocmp to retain commented-out capabilities rather than dis- carding them. Capabilities are commented by prefixing them with a pe- riod. -D tells infocmp to print the database locations that it knows about, and exit. -E Dump the capabilities of the given terminal as tables, needed in the C initializer for a TERMTYPE structure (the terminal capability struc- ture in the <term.h>). This option is useful for preparing versions of the curses library hardwired for a given terminal type. The tables are all declared static, and are named according to the type and the name of the corresponding terminal entry. Before ncurses 5.0, the split between the -e and -E options was not needed; but support for extended names required making the arrays of terminal capabilities separate from the TERMTYPE structure. -e Dump the capabilities of the given terminal as a C initializer for a TERMTYPE structure (the terminal capability structure in the <term.h>). This option is useful for preparing versions of the curses library hardwired for a given terminal type. -F compare terminfo files. This assumes that two following arguments are filenames. The files are searched for pairwise matches between en- tries, with two entries considered to match if any of their names do. The report printed to standard output lists entries with no matches in the other file, and entries with more than one match. For entries with exactly one match it includes a difference report. Normally, to reduce the volume of the report, use references are not resolved be- fore looking for differences, but resolution can be forced by also specifying -r. -f Display complex terminfo strings which contain if/then/else/endif ex- pressions indented for readability. -G Display constant literals in decimal form rather than their character equivalents. -g Display constant character literals in quoted form rather than their decimal equivalents. -i Analyze the initialization (is1, is2, is3), and reset (rs1, rs2, rs3), strings in the entry, as well as those used for starting/stopping cur- sor-positioning mode (smcup, rmcup) as well as starting/stopping keymap mode (smkx, rmkx). For each string, the code tries to analyze it into actions in terms of the other capabilities in the entry, certain X3.64/ISO 6429/ECMA-48 capabilities, and certain DEC VT-series private modes (the set of rec- ognized special sequences has been selected for completeness over the existing terminfo database). Each report line consists of the capa- bility name, followed by a colon and space, followed by a printable expansion of the capability string with sections matching recognized actions translated into {}-bracketed descriptions. Here is a list of the DEC/ANSI special sequences recognized: Action Meaning ----------------------------------------- RIS full reset SC save cursor RC restore cursor LL home-down RSR reset scroll region ----------------------------------------- DECSTR soft reset (VT320) S7C1T 7-bit controls (VT220) ----------------------------------------- ISO DEC G0 enable DEC graphics for G0 ISO UK G0 enable UK chars for G0 ISO US G0 enable US chars for G0 ISO DEC G1 enable DEC graphics for G1 ISO UK G1 enable UK chars for G1 ISO US G1 enable US chars for G1 ----------------------------------------- DECPAM application keypad mode DECPNM normal keypad mode DECANSI enter ANSI mode ----------------------------------------- ECMA[+-]AM keyboard action mode ECMA[+-]IRM insert replace mode ECMA[+-]SRM send receive mode ECMA[+-]LNM linefeed mode ----------------------------------------- DEC[+-]CKM application cursor keys DEC[+-]ANM set VT52 mode DEC[+-]COLM 132-column mode DEC[+-]SCLM smooth scroll DEC[+-]SCNM reverse video mode DEC[+-]OM origin mode DEC[+-]AWM wraparound mode DEC[+-]ARM auto-repeat mode It also recognizes a SGR action corresponding to ANSI/ISO 6429/ECMA Set Graphics Rendition, with the values NORMAL, BOLD, UNDERLINE, BLINK, and RE- VERSE. All but NORMAL may be prefixed with * "+" (turn on) or * "-" (turn off). An SGR0 designates an empty highlight sequence (equivalent to {SGR:NORMAL}). -l Set output format to terminfo. -p Ignore padding specifications when comparing strings. -Q n Rather than show source in terminfo (text) format, print the compiled (binary) format in hexadecimal or base64 form, depending on the op- tion's value: 1 hexadecimal 2 base64 3 hexadecimal and base64 For example, this prints the compiled terminfo value as a string which could be assigned to the TERMINFO environment variable: infocmp -0 -q -Q2 -q This makes the output a little shorter: * Make the comparison listing shorter by omitting subheadings, and using "-" for absent capabilities, "@" for canceled rather than "NULL". * However, show differences between absent and canceled capabili- ties. * Omit the "Reconstructed from" comment for source listings. -Rsubset Restrict output to a given subset. This option is for use with ar- chaic versions of terminfo like those on SVr1, Ultrix, or HP-UX that do not support the full set of SVR4/XSI Curses terminfo; and variants such as AIX that have their own extensions incompatible with SVr4/XSI. * Available terminfo subsets are "SVr1", "Ultrix", "HP", and "AIX"; see terminfo(5) for details. * You can also choose the subset "BSD" which selects only capabili- ties with termcap equivalents recognized by 4.4BSD. * If you select any other value for -R, it is the same as no subset, i.e., all capabilities are used. A few options override the subset selected with -R, if they are processed later in the command parameters: -C sets the "BSD" subset as a side effect. -I sets the subset to all capabilities. -r sets the subset to all capabilities. -s [d|i|l|c] The -s option sorts the fields within each type according to the argu- ment below: d leave fields in the order that they are stored in the terminfo database. i sort by terminfo name. l sort by the long C variable name. c sort by the termcap name. If the -s option is not given, the fields printed out will be sorted alphabetically by the terminfo name within each type, except in the case of the -C or the -L options, which cause the sorting to be done by the termcap name or the long C variable name, respectively. -T eliminates size-restrictions on the generated text. This is mainly useful for testing and analysis, since the compiled descriptions are limited (e.g., 1023 for termcap, 4096 for terminfo). -t tells tic to discard commented-out capabilities. Normally when trans- lating from terminfo to termcap, untranslatable capabilities are com- mented-out. -U tells infocmp to not post-process the data after parsing the source file. This feature helps when comparing the actual contents of two source files, since it excludes the inferences that infocmp makes to fill in missing data. -V reports the version of ncurses which was used in this program, and ex- its. -v n prints out tracing information on standard error as the program runs. The optional parameter n is a number from 1 to 10, inclusive, indicat- ing the desired level of detail of information. If ncurses is built without tracing support, the optional parameter is ignored. -W By itself, the -w option will not force long strings to be wrapped. Use the -W option to do this. -w width changes the output to width characters. -x print information for user-defined capabilities (see user_caps(5). These are extensions to the terminfo repertoire which can be loaded using the -x option of tic. FILES /usr/share/misc/terminfo compiled terminal description database EXTENSIONS The -0, -1, -a, -e, -E, -f, -F, -g, -G, -i, -l, -p, -q, -Q, -R, -t, -T, and -V options are ncurses extensions. PORTABILITY X/Open Curses Issue 7 (2009) specifies infocmp. It does not mention op- tions for producing descriptions in termcap format. SVr4 infocmp does not distinguish between absent and canceled capabilities. It furthermore reports missing integer capabilities as -1 (its internal representation). ncurses shows these as "NULL" for consistency with miss- ing string capabilities. The -r option of ncurses infocmp uses SVr4's notion of "termcap" capabili- ties. BSD curses had a more restricted set. To see only those present in 4.4BSD, use "-r -RBSD". HISTORY Although System V Release 2 provided a terminfo library, it had no docu- mented tool for decompiling the terminal descriptions. Tony Hansen (AT&T) wrote the first infocmp in early 1984, for System V Release 3. Eric Raymond used the AT&T documentation in 1995 to provide an equivalent infocmp for ncurses. In addition, he added a few new features such as: * the -e option, to support fallback (compiled-in) terminal descriptions * the -i option, to help with analysis Later, Thomas Dickey added the -x (user-defined capabilities) option, and the -E option to support fallback entries with user-defined capabilities. For a complete list, see the EXTENSIONS section. In 2010, Roy Marples provided an infocmp program for NetBSD. It is less capable than the SVr4 or ncurses versions (e.g., it lacks the sorting op- tions documented in X/Open), but does include the -x option adapted from ncurses. BUGS The -F option of infocmp(1M) should be a toe(1M) mode. AUTHORS Eric S. Raymond <esr@snark.thyrsus.com> and Thomas E. Dickey <dickey@invisible-island.net> SEE ALSO captoinfo(1M), infotocap(1M), tic(1M), toe(1M), curses(3X), terminfo(5), user_caps(5) https://invisible-island.net/ncurses/tctest.html ncurses 6.5 2025-11-11 infocmp(1M)
NAME | SYNOPSIS | DESCRIPTION | FILES | EXTENSIONS | PORTABILITY | HISTORY | BUGS | AUTHORS | SEE ALSO
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