Bisect: 889db62 SetText | 2f0cf3c mpe writes

[xsscx]

Parser: SetText() signed-char UB & MPE write offset underflows

2026-05-26 18:40:31 UTC

SetText() signed-char UB & MPE write offset underflows

• 889db62 - SetText() signed-char UB
• 2f0cf3c - unsigned size_t math without any checks

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[xsscx]

References

#987 #1096 #1145

Issue identifed when conducting Writer Tests for manual file, stream & device outputs