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COMPLETE(2) System Calls Manual COMPLETE(2)
complete - file name completion
typedef struct CompletionCompletion;
uchar advance; /* whether forward progress has been made */
uchar complete; /* whether the completion now represents a file or directory */
char *string; /* the string to advance, suffixed " " or "/" for file or directory */
int nmatch; /* number of files that matched */
int nfile; /* number of files returned */
char **filename;/* their names */
Completion* complete(char *dir, char *s);
void freecompletion(Completion *c);
The complete function implements file name completion. Given a direc‐
tory dir and a string s, it returns an analysis of the file names in
that directory that begin with the string s. The fields nmatch and
nfile will be set to the number of files that match the prefix and
filename will be filled in with their names. If the file named is a
directory, a slash character will be appended to it.
If no files match the string, nmatch will be zero, but complete will
return the full set of files in the directory, with nfile set to their
The flag advance reports whether the string s can be extended without
changing the set of files that match. If true, string will be set to
the extension; that is, the value of string may be appended to s by the
caller to extend the embryonic file name unambiguously.
The flag complete reports whether the extended file name uniquely iden‐
tifies a file. If true, string will be suffixed with a blank, or a
slash and a blank, depending on whether the resulting file name identi‐
fies a plain file or a directory.
The freecompletion function frees a Completion structure and its con‐
In rio(1) and acme(1), file name completion is triggered by a control-F
character or an Insert character.
The complete function returns a null pointer and sets errstr if the
directory is unreadable or there is some other error.
The behavior of file name completion should be controlled by the