Subj : fseditor.js: don't dereference line[l+1] after splice in unwrap_line
To   : GitLab note in main/sbbs
From : Steven Philley
Date : Sat Sep 12 2026 08:51:52

https://gitlab.synchro.net/main/sbbs/-/merge_requests/731#note_10347

Clarifying after Deuce’s IRC note: you do **not** type a 70-character word to create the kludge.

Interactive setup:

1. 80-col window.
2. 2\. Type one unbroken word of **\~90+** characters so fseditor mid-word wraps → first line \~79 chars (kludged) + remainder on the next line.
3. 3\. CTRL-W once on that **first** (kludged) line, then any keystroke that triggers rewrap/unwrap.

The “70-char + short last line” numbers in the harness are the **already-wrapped** in-memory state used to unit-test the crash after a large shrink (e.g. CTRL-W), not the characters you type to get the wrap in the first place. A word ≤79 never mid-word wraps; ≥80 is what creates `kludged`.
--- SBBSecho 3.37-Linux
 * Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)

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