diff options
Diffstat (limited to 'lib/libc/stdio/printf.3')
| -rw-r--r-- | lib/libc/stdio/printf.3 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/lib/libc/stdio/printf.3 b/lib/libc/stdio/printf.3 index fcea80fc7100..2ff5238f9a9f 100644 --- a/lib/libc/stdio/printf.3 +++ b/lib/libc/stdio/printf.3 @@ -176,6 +176,16 @@ After the the following appear in sequence: .Bl -bullet .It +An optional field, consisting of a decimal digit string followed by a +.Cm $ , +specifying the next argument to access . +If this field is not provided, the argument following the last +argument accessed will be used. +Arguments are numbered starting at +.Cm 1 . +If unaccessed arguments in the format string are interspersed with ones that +are accessed the results will be indeterminate. +.It Zero or more of the following flags: .Bl -hyphen .It @@ -394,6 +404,8 @@ A character that specifies the type of conversion to be applied. A field width or precision, or both, may be indicated by an asterisk .Ql * +or an asterisk followed by one or more decimal digits and a +.Ql $ instead of a digit string. In this case, an @@ -402,6 +414,8 @@ argument supplies the field width or precision. A negative field width is treated as a left adjustment flag followed by a positive field width; a negative precision is treated as though it were missing. +If a single format directive mixes positional (nn$) +and non-positional arguments, the results are undefined. .Pp The conversion specifiers and their meanings are: .Bl -tag -width "diouxX" |