Zero-length path prefixes can be specified in PATH as a leading or trailing colon or two adjacent colons. POSIX says that the use of zero-length prefixes to refer to the current directory is a legacy feature. Nonetheless the shells in BusyBox respect this feature, as does 'which'.
Tab-completion of executables using PATH should support this too. function old new delta complete_cmd_dir_file 934 931 -3 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-3) Total: -3 bytes Signed-off-by: Ron Yorston <[email protected]> --- libbb/lineedit.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/libbb/lineedit.c b/libbb/lineedit.c index 367396b91..b0adcf140 100644 --- a/libbb/lineedit.c +++ b/libbb/lineedit.c @@ -769,8 +769,6 @@ static unsigned path_parse(char ***p) if (!tmp) break; tmp++; - if (*tmp == '\0') - break; /* :<empty> */ npth++; } @@ -782,8 +780,6 @@ static unsigned path_parse(char ***p) if (!tmp) break; *tmp++ = '\0'; /* ':' -> '\0' */ - if (*tmp == '\0') - break; /* :<empty> */ res[npth++] = tmp; } /* special case: "match subdirectories of the current directory" */ @@ -854,6 +850,7 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type) struct dirent *next; struct stat st; char *found; + const char *lpath; if (paths[i] == NULL) { /* path_parse()'s last component? */ /* in PATH completion, current dir's subdir names @@ -863,7 +860,8 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type) paths[i] = (char *)"."; } - dir = opendir(paths[i]); + lpath = *paths[i] ? paths[i] : "."; + dir = opendir(lpath); if (!dir) continue; /* don't print an error */ @@ -878,7 +876,7 @@ static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type) if (strncmp(basecmd, name_found, baselen) != 0) continue; /* no */ - found = concat_path_file(paths[i], name_found); + found = concat_path_file(lpath, name_found); /* NB: stat() first so that we see is it a directory; * but if that fails, use lstat() so that * we still match dangling links */ -- 2.29.2 _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
