Log Message:
x11/xterm: update to 393

Patch #393 - 2024/07/11

 - add a check for ANSI SC/RC, to ignore CSI parameters.
 - improve check for missing characters for bitmap-fonts by using the normal \ 
font for reference in the case where the current font, e.g., the wide-font was \ 
derived from the normal font and lacks per-character metrics (report by Rajeev \ 
V. Pillai).
 - fix regression in error-recovery for SGR parameters from patch #357 (report \ 
by James Holderness).
 - remove some duplicates in xtermcfg.h (report by Matthew Green).
 - change default for --enable-imake configure option.
 - fixes for wcwidth:
     - return 0 for format effectors, like a zero-width printing character \ 
rather than -1 like a control character (report by Rajeev V. Pillai).
     - correct doublewidth to account for reserved codepoints which are listed \ 
in the EastAsianWidth file.
     - add a special case for surrogate pairs, which might be checked in testing \ 
the wcwidth function.
 - amend sixel bounds-check added in patch #371 to not wrap out-of-bounds data.
 - eliminate maxStringParse limit for SIXEL.
 - improve logic which ignores APC, PM and SOS controls to also not accumulate \ 
their data temporarily in a buffer.
 - exclude TERM_INGRESS from cleanup of environment variables (patch by Iain Riley).
 - fix some documentation typos (report by Thomas Wolff).