INCHARMAP doesn't always produce correct output

[dannye]

DEF TX_KATAKANA EQU $0f

MACRO fwcharmap
	charmap STRCAT("FW{x:\1}_", \2), \3
ENDM

	fwcharmap TX_KATAKANA, "デ", $4b

This creates the charmap entry "FWf_デ" with the byte value $4b.

Therefore, both CHARLEN("FWf_デ") and INCHARMAP("FWf_デ") should return 1.

However, this debugging code:

PRINTLN "=== CHARMAP ENTRY: FWf_デ ==="
PRINTLN "CHARLEN?"
PRINTLN CHARLEN("FWf_デ")
PRINTLN "INCHARMAP?"
PRINTLN INCHARMAP("FWf_デ")

Produces this output:

=== CHARMAP ENTRY: FWf_デ ===
CHARLEN?
$1
INCHARMAP?
$0

with rgbds v0.7.0.

CHARLEN("FWf_デ") does return 1, rather than returning 5 or something larger, showing that "FWf_デ" is recognized as a single char charmap entry. But INCHARMAP("FWf_デ") returns 0.

This was discovered here: https://github.com/pret/poketcg2
but if I have time, I'll try to see if I can produce a minimalist example.

[Rangi42]

Thanks for reporting this!

Here's a minimal example that outright segfaults:

charmap "デ", 1
println incharmap("デ")

Using ASCII characters works though.