diff options
| author | Kaz Kylheku <kaz@kylheku.com> | 2021-01-25 19:35:21 -0800 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2021-01-25 15:53:23 -0800 |
| commit | 381e0669fc3d0771a2c236ad816b6609cb4ff61c (patch) | |
| tree | 839b0238265b1d1c2c2efc1b1773221de10826c4 /txr.1 | |
| parent | 9f9f916d530e852a471739f625b985cf1346da4a (diff) | |
| download | txr-381e0669fc3d0771a2c236ad816b6609cb4ff61c.tar.gz txr-381e0669fc3d0771a2c236ad816b6609cb4ff61c.tar.bz2 txr-381e0669fc3d0771a2c236ad816b6609cb4ff61c.zip | |
sub-str: compat check now restores 215 behavior.
* lib.c (sub_str): If compatibility is requested, with a value
of 215 or less, then disable the optimization of returning
the original string without making a copy. This was found
to break the @(freeform) directive. That regression alerts me
to the fact that I should have made this subject to
compatibility; some user code could be affected.
* txr.1: New compat note added, under 215.
Diffstat (limited to 'txr.1')
| -rw-r--r-- | txr.1 | 19 |
1 files changed, 17 insertions, 2 deletions
@@ -77144,8 +77144,23 @@ variable. In cases where resolved the path by adding a suffix, .code *load-path* was bound to the unsuffixed name, which was a documented behavior. -The old behavior is restored if 215 or lower compatibility -is requested. +After \*(TX 215, also, the behavior of the +.code sub-str +function changed. When the arguments implicate the entire string, +.code sub-str +started just returning the original string, and not making a copy. +The old behavior was to always make a copy. +The above old behaviors of +.code load +and +.code sub-str +are restored if 215 or lower compatibility +is requested. Note, however, that the restoration of the +.code sub-str +behavior in response to the compatibility option was only +introduced in \*(TX 250. In \*(TX 249 and older, the +compatibility value has no effect on the behavior of +.codn sub-str . .IP 202 Up to \*(TX 202, the .code logxor |