Hi Kyle,
The "+" operator is still supported in the license expression syntax. The "GPL-2.0+" license ID was introduced before the "+" and all ID's that end in "+" are now deprecated. Per the request of the license stewards, we introduced ID's ending in "-or-later" and "-only". Per the syntax spec, adding the "+" operator after any of these licenses are allowed, but as you mentioned they do not make much sense semantically. In the license expression parsers I maintain, I do not issue a warning when the "+" operator follows an ID ending in a "-or-later", or "-only". Since all the ID's ending in "+" are deprecated, I issue warnings that a deprecated license ID is used. I'm open to feedback from the rest of the community if we should issue a validation warning when a "+" follows the ID's ending in "-or-later" or "-only". Gary From: [email protected] <[email protected]> On Behalf Of Kyle Mitchell Sent: Tuesday, September 19, 2023 3:26 AM To: [email protected] Subject: [spdx] Catching Up on License IDs Ending in "+" I maintain a few packages packaging and implementing bits of SPDX, especially the license list and expression syntax, for the JavaScript npm package system. I'm seeing some changes in recent https://spdx.org/licenses/licenses.json and would like to make sure I understand them before updating packages or automation to update them. Do I correctly understand that "+" now appears at the end of some listed license IDs only to express that some expressions using the "+" operator, like GPL-2.0+, are now deprecated in favor of "-or-later" IDs, like GPL-2.0-or-later? In other words, SPDX does not plan to add more licenses with identifiers ending in "+" going forward? I see that the "+" suffix remains valid in the simple-expression production rule of the expression syntax grammar. But I take it "GPL-2.0++" should not be considered a valid license expression. Many thanks for any helping hand. -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#1763): https://lists.spdx.org/g/spdx/message/1763 Mute This Topic: https://lists.spdx.org/mt/101448004/21656 Group Owner: [email protected] Unsubscribe: https://lists.spdx.org/g/spdx/leave/2655439/21656/1698928721/xyzzy [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
