Release v0.9.2 · gbdev/rgbds

May the 4th be with you! ⭐ 👾

Added

New 0-indexed string functions (we plan to eventually deprecate the old 1-indexed ones):
- STRFIND and STRRFIND: like STRIN and STRRIN
- STRCHAR: like CHARSUB
- STRSLICE: like STRSUB, but taking start and stop indexes, instead of a start position and length
CHARCMP: compares two strings by their charmap value sequences
CHARSIZE: counts how many charmap values a single character would map to
REVCHAR: reverse-maps a value sequence to its charmap string (the values must have one unique corresponding charmap)
Allow macro \<arg> to take negative values to count arguments from the end (e.g. \<-2> is the penultimate arg)
Allow the index of bit/res/set instructions to be determined at link time
rgbgfx -B/--background specifies a "background" color; tiles entirely of that color will be skipped in the graphic output
rgbfix -o/--output can write its output to a different file than its input (must have one input file); thanks @jmillikin!

Raw symbols do not undergo EQUS expansion (so #symbol can be used instead of "{symbol}")
Some invalid instructions have more specific error messages than just "syntax error"
Terser RGBASM output for sequences of unknown characters
contrib/gbdiff.bash does not need a .sym file to be sorted

Macro names could be used as numeric symbols with value 0
Map files were listing anonymous labels (as Unicode escape syntax)
RGBGFX could segfault with transparent colors in embedded palettes
RGBGFX could segfault or give incorrect output for grayscale images with transparent colors
RGBFIX expects nonzero -r/--ram-size for -m MBC6 (the one game that uses MBC6 has -r 3)
CMAKE_CXX_FLAGS_DEBUG can be user-specified

Thanks to @Rangi42 and @ISSOtm for the work done for this release.