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Stop swallowing the cartesian product

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This should work:
 > env TERM=vt100 ./fish -c 'echo (set_color red)"hi"'

We do a ::reset() if setting the color doesn't happen.

Fixes #2951
This commit is contained in:
Aaron Gyes 2016-07-23 13:40:01 -07:00
parent 644ea82c2f
commit 5afd939f3e
3 changed files with 10 additions and 4 deletions
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7
src/builtin_set_color.cpp
View file

@ -179,7 +179,12 @@ int builtin_set_color(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
write_color(rgb_color_t::black(), true /* is_fg */);
writembs(tparm(exit_attribute_mode));
} else {
write_color(fg, true /* is_fg */);
if (!write_color(fg, true /* is_fg */)) {
// We need to do *something* or the lack of any output messes up
// when the cartesian product here would make "foo" disappear:
// $ echo (set_color foo)bar
set_color(rgb_color_t::reset(), rgb_color_t::none());
}
}
}

5
src/output.cpp
View file

@ -106,12 +106,12 @@ static bool write_background_color(unsigned char idx) {
}
// Exported for builtin_set_color's usage only.
void write_color(rgb_color_t color, bool is_fg) {
bool write_color(rgb_color_t color, bool is_fg) {
bool supports_term24bit = !!(output_get_color_support() & color_support_term24bit);
if (!supports_term24bit || !color.is_rgb()) {
// Indexed or non-24 bit color.
unsigned char idx = index_for_color(color);
(is_fg ? write_foreground_color : write_background_color)(idx);
return (is_fg ? write_foreground_color : write_background_color)(idx);
} else {
// 24 bit! No tparm here, just ANSI escape sequences.
// Foreground: ^[38;2;<r>;<g>;<b>m
@ -127,6 +127,7 @@ void write_color(rgb_color_t color, bool is_fg) {
}
}
}
return true;
}
/// Sets the fg and bg color. May be called as often as you like, since if the new color is the same

2
src/output.h
View file

@ -51,7 +51,7 @@ void output_set_color_support(color_support_t support);
rgb_color_t best_color(const std::vector<rgb_color_t> &colors, color_support_t support);
void write_color(rgb_color_t color, bool is_fg);
bool write_color(rgb_color_t color, bool is_fg);
unsigned char index_for_color(rgb_color_t c);
#endif