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- '\" $Header: /user6/ouster/tcl/man/RCS/format.n,v 1.2 93/07/17 15:39:01 ouster Exp $ SPRITE (Berkeley)
- '\"
- .so man.macros
- .HS format tcl
- .BS
- '\" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- format \- Format a string in the style of sprintf
- .SH SYNOPSIS
- \fBformat \fIformatString \fR?\fIarg arg ...\fR?
- .BE
-
- .SH DESCRIPTION
- .PP
- This command generates a formatted string in the same way as the
- ANSI C \fBsprintf\fR procedure (it uses \fBsprintf\fR in its
- implementation).
- \fIFormatString\fR indicates how to format the result, using
- \fB%\fR conversion specifiers as in \fBsprintf\fR, and the additional
- arguments, if any, provide values to be substituted into the result.
- Each \fIarg\fR must match the expected type
- from the corresponding conversion specifier in \fIformatString\fR;
- the \fBformat\fR command converts each argument to the correct
- type (floating, integer, etc.) before passing it to \fBsprintf\fR
- for formatting.
- The return value from \fBformat\fR is the formatted string.
- .PP
- .VS
- The conversion specifiers for \fBformat\fR are identical in syntax
- and effect to those for \fBsprintf\fR except for the following
- differences:
- .IP [1]
- \fB%p\fR and \fB%n\fR specifiers are not currently supported.
- .VE
- .IP [2]
- For \fB%c\fR conmversions the argument must be a decimal string,
- which will then be converted to the corresponding ASCII character value.
- .IP [3]
- .VS
- The \fBl\fR modifier is ignored; integer values are always converted
- as if there were no modifier present and real values are always
- converted as if the \fBl\fR modifier were present (i.e. type
- \fBdouble\fR is used for the internal representation).
- If the \fBh\fR modifier is specified then integer values are truncated
- to \fBshort\fR before conversion.
- .PP
- The \fBformat\fR command also supports the XPG3 ``%n$'' positional
- specifiers.
- .VE
-
- .SH KEYWORDS
- format, sprintf, string, substitution
-