Provided by: nmh_1.7.1-11_amd64 
NAME
fmttest - test programs in nmh's mh-format(5) language
SYNOPSIS
fmttest [-help] [-version] [-form formatfile] [-format formatstring] [-address | -raw | -date | -message]
[-file | -nofile] [--component component-text] [-dupaddrs | -nodupaddrs] [-ccme | -noccme] [-outsize
size-in-characters] [-width column-width] [-msgnum number] [-msgcur flag] [-msgsize size] [-unseen
flag] [-dump | -nodump] [-trace | -notrace] [+folder] [msgs | strings]
DESCRIPTION
fmttest is used to test programs written for the nmh format language as specified by mh-format(5). It is
also intended to replace the ap, dp, and fmtdump programs.
Format Program Selection
The -format string and -form formatfile specify a format string or file to read. A format string, if
given, must be a single argument to the -format switch. If a format file name is passed to the -form,
switch, the file is searched for using the normal nmh rules: absolute pathnames are accessed directly,
tilde expansion is done on usernames, and files are searched for in the user's Mail directory as
specified in their profile. If not found there, the directory “/etc/nmh” is checked.
Mode Selection and Component Specification
fmttest has four operating modes - address, raw, date, and message - which are selected by the -address,
-raw, -date, and -message switches, respectively.
Address mode treats every argument as an email address to be processed by nmh's email parser using the
specified format program. The parsed address is made available as a special %{text} component escape,
and the output from the program is printed on standard output. If there was an error parsing the email
address the error message is stored in the %{error} component escape. If no format program is given on
the command line, the following default program is used:
%<{error}%{error}: %{text}%|%(putstr(proper{text}))%>
Address mode is equivalent to ap(8).
In raw mode, no processing of the specified arguments is done. Each argument is run against the
specified format program with the argument text available in the %{text} component. You must specify a
format with -form or -format when using raw mode.
Date mode is identical to raw mode, with one exception: if no format is specified, the following format
string is used:
%<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>
Date mode is equivalent to dp(8).
In message mode the arguments to fmttest are interpreted as an optional folder and messages. fmttest
will read each specified message and make all of the components in the message available to the format
program. Also, the appropriate information for the %(msg), %(cur), %(unseen), and %(size) function
escapes will be made available for each message. If the -file switch is given, the arguments are
interpreted as filenames instead of message numbers, but otherwise the behavior is the same (except that
the %(msg), %(cur), and %(unseen) function escapes will not provide any useful information).
The default format used in address mode is the default format used by scan. The following command can
replicate the functionality of the repl command.
fmttest -nodupaddrs -form replcomps -outsize max [+folder] message
Regardless of the mode, other components can be provided to the format program by the use of the
--component switch. For example, the following program will test the use of the “encrypted” component:
fmttest --encrypted yes -message cur
In message mode, components supplied on the command line will override components from messages.
Additional Switches
The -dupaddrs and -nodupaddrs switches control whether duplicate addresses are allowed or suppressed by
the FORMATADDR instruction, which is used by the `%(formataddr)' function escape. In normal operation
duplicate addresses are only suppressed by repl.
The -ccme and -noccme switches control whether or not to count the user's local mailbox as a duplicate
address. This replicates the behavior of the -cc me switch to repl, and only applies if -nodupaddrs is
in effect.
The -outsize switch controls the maximum number of printable characters that the format engine will
produce. Characters marked as non-printing by the format engine with `%(zputlit)', characters with zero
width, and extra bytes that are part of a multibyte character are not counted against this total. Two
special values are supported: “max”, which means as many characters as the format engine can produce
(limited by internal buffers), and “width”, which will set the value to the width of the terminal. In
message mode it defaults to “width”, otherwise the default is “max”.
The -width switch controls the column width which is used by the `%(width)' function escape. It defaults
to the terminal width.
The -msgnum, -msgcur, -msgsize, and the -unseen switches all control the values used, respectively, by
the following function escapes: `%(num)', `%(cur)', `%(size)', and `%(unseen)'. If none are supplied,
these values are taken from the message in message mode; in all other modes the default values are 0.
Compiling and Tracing Format Programs
The -dump switch outputs the complete set of format instructions for the specified format program. The
-trace switch will output each format instruction as it is being executed, and show the values of the num
and str registers if they have changed from the previous instruction. The output buffer is also printed
if it has changed from the previous instruction.
Format Instructions
It should be noted that there is not a one-to-one correspondence between format escapes and format
instructions; many instructions have side effects. Instructions prefixed with “LV” generally return a
integer into the num (value) register; instructions prefixed with a “LS” return a string into the str
register.
Instruction Description
COMP Output component
COMPF Formatted output component
LIT Output literal text
LITF Formatted literal text output
CHAR Output single character
NUM Output the num register
NUMF Formatted output of the num register
STR Output the str register
STRF Formatted output of the str register
STRFW Not used
PUTADDR Output address list in str register
STRLIT Output str, no space compression
STRLITZ Like STRLIT, but not counted against width
LS_COMP Write component to str register
LS_LIT Write literal to str register
LS_GETENV Write environment var to str register
LS_DECODECOMP Decode RFC 2047 encoded component to str register
LS_DECODE Decode RFC 2047 encoded string to str register
LS_TRIM Trim trailing whitespace from str register
LV_COMP Convert component to integer, store in num register
LV_COMPFLAG Set num to 1 if TRUE set in component
LV_LIT Load literal value into num register
LV_DAT Load value from dat array into num register (see note)
LV_STRLEN Set num to the length of str
LV_PLUS_L Add value to num register
LV_MINUS_L Subtract value from num register
LV_DIVIDE_L Divide num register by value
LV_MODULO_L num modulo value
LV_CHAR_LEFT Store remaining number of printable chars in num
LS_MONTH Write short name of month to str from date component
LS_LMONTH Write long name of month to str from date component
LS_ZONE Write time zone offset to str from date component
LS_DAY Write short name of day of week to str from date component
LS_WEEKDAY Write long name of day of week to str from date component
LS_822DATE Write RFC 822 compatible date to str from date component
LS_PRETTY Write date with “pretty” timezone to str
LV_SEC Write date component seconds to num
LV_MIN Write date component minutes to num
LV_HOUR Write date component hour to num
LV_MON Write date component numeric month to num (start at 1)
LV_YEAR Write date component year to num
LV_YDAY Write date component Julian day to num
LV_WDAY Write date component day of week to num (0 == Sunday)
LV_ZONE Write date component time zone offset to num
LV_CLOCK Write date component in Unix epoch time to num
LV_RCLOCK Write offset of date component from current time to num
LV_DAYF Write 1 to num if day of week is explicit
LV_DST Write 1 to num if DST is in effect for date component
LV_ZONEF Write 1 to num if timezone is explicit
LS_ADDR Write email address of addr component to str
LS_PERS Write personal name of addr component to str
LS_MBOX Write mailbox (username) of addr component to str
LS_HOST Write host of addr component to str
LS_PATH Write host route of addr component to str
LS_GNAME Write group name of addr component to str
LS_NOTE Write note portion of addr component to str
LS_822ADDR Write “proper” RFC 822 version of addr component to str
LS_FRIENDLY Write friendly (name or note) of address component to str
LS_UNQUOTE Remove RFC 2822 quotes from string
LV_HOSTTYPE Set num to type of host (0=local, 1=network)
LV_INGRPF Set num to 1 if address was inside of group
LV_NOHOSTF Set num to 1 of no host was present in address component
LOCALDATE Convert date component to local timezone
GMTDATE Convert date component to GMT
PARSEDATE Parse date component
PARSEADDR Parse address component
FORMATADDR Add address component to list in str
CONCATADDR Like FORMATADDR, but will not suppress duplicates
MYMBOX Set num if address component is a local address
SAVESTR Save str register temporarily
DONE End program
NOP No operation
GOTO Jump to new instruction
IF_S_NULL Branch if str is NULL
IF_S Branch if str is not NULL
IF_V_EQ Branch if num is equal to value
IF_V_NE Branch if num is not equal to value
IF_V_GT Branch if num is greater than value
IF_MATCH Branch if str contains string
IF_AMATCH Branch if str starts with string
S_NULL Set num to 1 if str is NULL
S_NONNULL Set num to 1 if str is not NULL
V_EQ Set num to 1 if num equals value
V_NE Set num to 1 if num does not equal value
V_GT Set num to 1 if num is greater than value
V_MATCH Set num to 1 if str contains string
V_AMATCH Set num to 1 if str starts with string
The LV_DAT instruction is a bit special. Callers of the format library pass in an array of integers that
are used by certain format escapes. The current list of format escapes and the indexes they use are:
dat[0] %(num)
dat[1] %(cur)
dat[2] %(size)
dat[3] %(width)
dat[4] %(unseen)
SEE ALSO
mh-format(5), repl(1), ap(8), dp(8), fmtdump(8)
DEFAULTS
`-message'
`-nofile'
`-dupaddrs'
BUGS
It shouldn't require as much code from other programs as it does.
nmh-1.7.1 2014-08-31 FMTTEST(1mh)