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Diffstat (limited to 'doc/linsert.n')
| -rw-r--r-- | doc/linsert.n | 29 |
1 files changed, 17 insertions, 12 deletions
diff --git a/doc/linsert.n b/doc/linsert.n index 9f37fcd..c722e4f 100644 --- a/doc/linsert.n +++ b/doc/linsert.n @@ -13,24 +13,30 @@ .SH NAME linsert \- Insert elements into a list .SH SYNOPSIS -\fBlinsert \fIlist index element \fR?\fIelement element ...\fR? +\fBlinsert \fIlist index \fR?\fIelement element ...\fR? .BE - .SH DESCRIPTION .PP This command produces a new list from \fIlist\fR by inserting all of the \fIelement\fR arguments just before the \fIindex\fR'th element of \fIlist\fR. Each \fIelement\fR argument will become a separate element of the new list. If \fIindex\fR is less than or equal to zero, then the new -elements are inserted at the beginning of the list. -.VS 8.5 -The interpretation of the \fIindex\fR value is the same as -for the command \fBstring index\fR, supporting simple index -arithmetic and indices relative to the end of the list. -.VE +elements are inserted at the beginning of the list, and if \fIindex\fR is +greater or equal to the length of \fIlist\fR, it is as if it was \fBend\fR. +As with \fBstring index\fR, the \fIindex\fR value supports both simple index +arithmetic and end-relative indexing. +.PP +Subject to the restrictions that indices must refer to locations inside the +list and that the \fIelement\fRs will always be inserted in order, insertions +are done so that when \fIindex\fR is start-relative, the first \fIelement\fR +will be at that index in the resulting list, and when \fIindex\fR is +end-relative, the last \fIelement\fR will be at that index in the resulting +list. .SH EXAMPLE +.PP Putting some values into a list, first indexing from the start and then indexing from the end, and then chaining them together: +.PP .CS set oldList {the fox jumps over the dog} set midList [\fBlinsert\fR $oldList 1 quick] @@ -38,13 +44,12 @@ set newList [\fBlinsert\fR $midList end-1 lazy] # The old lists still exist though... set newerList [\fBlinsert\fR [\fBlinsert\fR $oldList end-1 quick] 1 lazy] .CE - .SH "SEE ALSO" list(n), lappend(n), lindex(n), llength(n), lsearch(n), lset(n), lsort(n), lrange(n), lreplace(n), -.VS 8.5 string(n) -.VE - .SH KEYWORDS element, insert, list +'\" Local Variables: +'\" mode: nroff +'\" End: |