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authorRoberto E. Vargas Caballero <k0ga@shike2.com>2013-10-01 21:23:11 +0200
committerRoberto E. Vargas Caballero <k0ga@shike2.com>2013-10-02 21:22:15 +0200
commit7a4eefe87cb7661c8a77286d05b6c3afb467f806 (patch)
tree9ecce302d1acd95238e312a315c211cce5bec4a3 /arg.h
parentc5c2365ab7c7ac2671b6e7d31cc9b0d41636393c (diff)
downloadst-7a4eefe87cb7661c8a77286d05b6c3afb467f806.tar.gz
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Add support for multiple charset definitions
vt100 has support for two defined charset, G0 and G1. Each charset can be defined, but in each moment is selected only one of both charset. This is usually used selecting a national charset in G0 and graphic charset in G1, so you can switch between graphic charset and text charset without losing the national charset already defined. st hasn't support for national charsets, because it is an utf8 based terminal emulator, but it has support for graphic charset because it is heavily used, but it only supports G0, without understanding G1 selection sequences, which causes some programs in some moments can print some garbage in the screen. This patch adds a fake support for multiple charset definitions, where we only support graphic charset and us-ascii charset, but we allow more of one charset definition. This patch allow define G0 until G3 charsets, but only accepts select G0 or G1, and it accepts some national charset definitions but all of them are mapped to us-ascii.
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