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Common (Format): fixes module format strings mishandling a value that carries more than one leading ANSI escape sequence

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Carter Li
2026-09-21 13:16:43 +08:00
parent b726ee5a85
commit 6842ae0757
3 changed files with 78 additions and 24 deletions
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tests/format.c
+17
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@@ -147,6 +147,23 @@ int main(void) {
VERIFY("output({1~2})", "\e[30;47m12345\e[m", "output(\e[30;47m345\e[m)");
}
{
// All leading escape codes must be skipped, not just the first one
VERIFY("output({1:3})", "\e[31m\e[1m12345", "output(\e[31m\e[1m123)");
VERIFY("output({1:-3})", "\e[31m\e[1m12345", "output(\e[31m\e[1m123…)");
VERIFY("output({1<8})", "\e[31m\e[1m12345", "output(\e[31m\e[1m12345 )");
VERIFY("output({1~2})", "\e[31m\e[1m12345", "output(\e[31m\e[1m345)");
// ... and so must all trailing ones
VERIFY("output({1:3})", "\e[31m\e[1m12345\e[m\e[39m", "output(\e[31m\e[1m123\e[m\e[39m)");
VERIFY("output({1~2})", "\e[31m\e[1m12345\e[m\e[39m", "output(\e[31m\e[1m345\e[m\e[39m)");
VERIFY("output({1<8})", "\e[31m\e[1m12345\e[m\e[39m", "output(\e[31m\e[1m12345 \e[m\e[39m)");
// `\e[?25l` is a complete CSI sequence, not just `\e[?`
VERIFY("output({1:3})", "\e[?25l12345", "output(\e[?25l123)");
VERIFY("output({1~4})", "\e[?25l12345", "output(\e[?25l5)");
}
#ifndef _WIN32 // Windows doesn't have setenv
{
ffListInit(&instance.config.display.constants);