📃 SLua Alpha

Making this a Canny at Harold's request. The name "listeners" in this context is confusing because we already have "listen" events. "handlers" is a more accurate term that is unambiguous and already in general use when discussing the subject. I suppose that "listeners" could potentially be kept as an alias for backward compatibility, if deemed necessary, but I feel that its use should be deprecated to avoid future ambiguity. (Not sure of the appropriate category for things like this. Calling it a Bug since it entails a change in the source code.)

Possibly related to [ https://feedback.secondlife.com/scripting-bugs/p/script-suddently-losing-connetion-with-the-server-on-save ] A few times I've gotten the above error. Fixing the syntax error does not eliminate the message — it's as if the script inventory instance is permanently disabled. My workaround has been to copy the script text to a new inventory instance. I was able to reproduce this on SLua Tombolo. 1) Create a block and add a new SLua script to it. 2) Change line 1 to: `` xxx ll.Say(0, "Hello, Avatar!") `` 3) Save. See an expected, normal error message. 4) Clone the object. Edit the script in the clone. 5) Notice the cloned script is marked not-running. 6) Use the external editor button to edit the cloned script. See the dreaded (0,0) error. (I am using BBEdit as my external editor: /usr/bin/open -a bbedit "%s" ) --- Second Life Project lua editor 7.1.12.13973830462 (64bit) Release Notes You are at 194.7, 250.2, 23.1 in SLua Tombolo located at simhost-0766603a88e3665d6.aditi SLURL: secondlife://Aditi/secondlife/SLua%20Tombolo/195/250/23 (global coordinates 41154.7, 23802.2, 23.1) Luau 2025-03-27.14115520293 Release Notes CPU: Apple M2 Max (2400 MHz) Memory: 32768 MB OS Version: macOS 15.3.2 Darwin 24.3.0 Darwin Kernel Version 24.3.0: Thu Jan 2 20:24:23 PST 2025; root:xnu-11215.81.4~3/RELEASE_ARM64_T6020 x86_64 Graphics Card Vendor: Apple Graphics Card: Apple M2 Max OpenGL Version: 4.1 Metal - 89.3 Window size: 2602x2102 Font Size Adjustment: 96pt UI Scaling: 1 Draw distance: 512m Bandwidth: 3000kbit/s LOD factor: 1.25 Render quality: 2 Texture memory: 21845MB Disk cache: Max size 1638.4 MB (99.9% used) HiDPI display mode: true J2C Decoder Version: KDU v7.10.4 Audio Driver Version: OpenAL, version 1.1 ALSOFT 1.23.1 / OpenAL Community / OpenAL Soft: OpenAL Soft Dullahan: 1.14.0.202408091638 CEF: 118.4.1+g3dd6078+chromium-118.0.5993.54 Chromium: 118.0.5993.54 LibVLC Version: 3.0.21 Voice Server Version: Not Connected Packets Lost: 13/10384 (0.1%) March 30 2025 06:20:01

The syntax highlighter indicates that math.isnan should exist. However an attempt to use it results in an Attempt To Call A Nil Value error. Image showing error and highlighting compared to both valid and invalid math.xx expressions: https://imgur.com/3xX9lNe I lean toward fixing this by implementing math.isnan on principle of luau compatibility, but I don't have strong feelings about it either way. The number of likely users of math.isnan is incredibly small ( laughs one?) and I'm perfectly comfortable with using v~=v. (It's more succinct!)

lljson has inconsistent behavior. I think these should all produce an error: print(pcall(lljson.sldecode, '"!vOops"')) print(pcall(lljson.sldecode, '"!qOops"')) print(pcall(lljson.sldecode, '"!uOops"')) The first 2 produce an error: malformed tagged vector: !vOops malformed tagged quaternion: !qOops But the last one produces an uncompressed uuid: local _, u = pcall(lljson.sldecode, '"!uOops"') print(u, typeof(u), u.bytes) -- Oops uuid nil This uuid cannot be re-encoded: print(pcall(lljson.slencode, u)) invalid UUID format for JSON encoding Instead, sldecode should produce an error: malformed tagged uuid: !uOops And uncompressed uuid's should be removed from slua, it's documentation, and typechecker: https://github.com/secondlife/lsl-definitions/blob/23d46484888c1908545dc92db119613bb553af11/slua_definitions.yaml#L70 - name: bytes comment: Returns the raw 16-byte binary string of the UUID, or nil if the UUID is not in a compressed state type: string?

Slua viewer has a linux build: https://github.com/secondlife/viewer/releases/tag/Second_Life_Project%231bcae36f-SLua But it isn't listed on the release page: https://releasenotes.secondlife.com/viewer/26.1.0.21525310258.html

In the script editor, when I click "File > Load from File", the dialog box only allows me to select files who's name ends in .lsl. It should also allow me to select files who's name ends in .lua or .luau

I've been porting a set of three scripts to the LSL on luavm 2025 and have run into an unexpected memory limit issue. As the script has grown by my enabling more of it by integrating the three scripts into one, the USED memory size has crossed the 64k boundary. This includes code and data, and because of a different bug that Harold Linden is aware of (code size greater than 64k triggers a constructor fault), I've been working to keep the code under 64k (just barely at this point). Today I started getting these kinds of runtime errors: PRIMA Femme Elite v1.9 [script:body_lsl] Script run-time error not enough memory not enough memory [C] function ListInsertList [C] function ListReplaceList lsl_script function _fupdate_link_alpha lsl_script function _fchange_piece_shape lsl_script function _e0/state_entry By commenting out other code that is not used during the state_entry logic, the code runs. I'm guessing it's because there are checks in the list code called to make sure the lists are inside the 64k boundaries of days of yore. I have some skid marks in my code and what I see are these two messages before the script fault occurs: state_entry 0 used 61241 free 69831 state_entry2 1 used 66745 free 64327 The first one is the first statement in state_entry(). The second one is down a ways after I've initialized a bunch of my global variables. The third one I added to the code never runs because of the error shown above.

This appears to be related to highlighting. It is also influenced by the amount of code in the script and by the amount of comment text. However, commenting out all preceding code, or turning it all into a very long string, can make the problem vanish. The affected scripts compile and run without unexpected errors, but it becomes difficult to edit certain lines within the editor: Steps to reproduce: In an SLua Enabled Sim, rez a new prim. Create a new script, open it, and replace the contents with the attached script. Note that "LLEvents" in line 14 is highlighted in green. Attempt to select the line. Observe that only the word "function" is highlighted. Copy the line and paste at the bottom of the script. Observe that the whole line is pasted. Place the cursor at the left edge of the line and move right one character at a time with the arrow keys. Observe that the characters "s.touch_e" are skipped as a group. Attempt to select or erase "_end". Depending on your method, various failures will occur. Press End to move to the end of the line. Observe that the visible cursor is well past the end of the line, but that backspace deletes the last character. Note that when the line no longer represents a proper event that the line becomes normally editable. Comment out line 12. Observe that "LLEvents" becomes blue and the line is normally editable. Reenable line 12 and delete line 13. Observe the same. So far, I have only observed this with LLEvents.touch... All 3 are affected. In-Editor WORKAROUND: When editing an affected line, change the first keyword by adding an extra character at the beginning, such as making "LLEvents" into "xLLEvents". Edit the line as needed, then remove the extra character.

The following code snippet generates a one and a zero for my "vis" value shown in the DBG_MSG0 call (is_visible is an argument to the function declared as integer): // force into a boolean 0/1 value integer b4 = is_visible; is_visible = is_visible != 0; DBG_MSG0(["S1: change_piece_vis", full_piece_id, "vis", is_visible, b4, "link_num", link_num]); b4 is printing out as zero, while is_visible ends up being one. The "skid marks" that are the result of this action in my scripts look like this: set_body_flags 8 0 NEW body_vis_flags 7 S1: change_piece_vis 25 vis 1 0 link_num 57 The first skid mark is shows that body flags was indeed updated to have a zero at the relevant position confirming that the change_piece_vis code should be getting a zero value which is what b4 has stored. So the "is_visible != 0" clause is not generating the right value.

lljson.empty_array decodes to an empty table: local t = { lljson.null, lljson.empty_array } print(t[1], t[2]) -- > lljson_constant: 0x0000000000000003 lljson_constant: 0x0000000000000005 local s = lljson.slencode(t) print(s) -- > [null,[]] local ts = lljson.sldecode(s) print(ts[1], ts[2]) -- > lljson_constant: 0x0000000000000003 table: 0x0000000011ef6718 lljson.slencode()/sldecode() should be able to recover the exact same table.