fblocked(n) Tcl Built-In Commands fblocked(n)______________________________________________________________________________NAMEfblocked - Test whether the last input operation exhausted all avail‐
able input
SYNOPSISfblocked channelId
_________________________________________________________________DESCRIPTION
The fblocked command returns 1 if the most recent input operation on
channelId returned less information than requested because all avail‐
able input was exhausted. For example, if gets is invoked when there
are only three characters available for input and no end-of-line
sequence, gets returns an empty string and a subsequent call to
fblocked will return 1.
ChannelId must be an identifier for an open channel such as a Tcl stan‐ │
dard channel (stdin, stdout, or stderr), the return value from an invo‐ │
cation of open or socket, or the result of a channel creation command │
provided by a Tcl extension.
SEE ALSOgets(n), open(n), read(n), Tcl_StandardChannels(3)KEYWORDS
blocking, nonblocking
Tcl 7.5 fblocked(n)