TinTin++ Mud Client Manual
         FORMAT

Command: #format {variable} {format} {argument1} {argument2} {etc}

         Allows you to store a string into a variable in the exact same way
         C's sprintf works with a few enhancements and limitations such as
         no integer operations and a maximum of 30 arguments.

         If you use #format inside an alias or action you must escape %1s as
         %+1s or %%1s or %\1s so the %1 isn't substituted by the trigger.

         #format {test} {%+9s} {string}  pad string with up to 9 spaces
         #format {test} {%-9s} {string}  post pad string with up to 9 spaces
         #format {test} {%.8s} {string}  copy at most 8 characters
         #format {test} {%a}   {number}  print corresponding charset character
         #format {test} {%c}   {string}  use a highlight color name
         #format {test} {%d}   {number}  print a number with integer formatting
         #format {test} {%f}   {string}  perform floating point math
         #format {test} {%g}   {number}  perform thousand grouping on {number}
         #format {test} {%h}   {string}  turn text into a header line
         #format {test} {%l}   {string}  lowercase text
         #format {test} {%m}   {string}  perform mathematical calculation
         #format {test} {%n}     {name}  capitalize the first letter
         #format {test} {%p}   {string}  strip leading and trailing spaces
         #format {test} {%r}   {string}  reverse text, hiya = ayih
         #format {test} {%s}   {string}  print given string
         #format {test} {%t}   {format}  display time with strftime format
                                         optional {{format}{time}} syntax
         #format {test} {%u}   {string}  uppercase text
         #format {list} {%w}   {string}  store word wrapped text in {list}
                                         optional {{string}{width}} syntax
         #format {test} {%x}      {hex}  print corresponding charset character
         #format {test} {%A}     {char}  store corresponding character value
         #format {test} {%C}   {number}  store number in chronological notation
         #format {test} {%D}      {hex}  convert hex to decimal in {test}
         #format {hash} {%H}   {string}  store a 64 bit string hash in {hash}
         #format {test} {%L}   {string}  store the string length in {test}
         #format {test} {%M}   {number}  convert number to metric in {test}
         #format {test} {%S}   {string}  store the number of spelling errors
         #format {time} {%T}         {}  store the epoch time in {time}
         #format {time} {%U}         {}  store the micro epoch time in {time}
         #format {test} {%X}      {dec}  convert dec to hexadecimal in {test}

         #format {test} {%%}             a literal % character

Comment: See #help TIME for help on the %t argument.

Related: cat, echo, function, local, math, replace, script, time and variable.