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Ignore more ANSI escape sequences

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Fix #2420
This commit is contained in:
Junegunn Choi 2021-04-06 00:51:39 +09:00
parent 391237f7df
commit be36de2482
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GPG Key ID: 254BC280FEF9C627
1 changed files with 5 additions and 5 deletions
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10
src/ansi.go
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@ -103,11 +103,11 @@ func matchOperatingSystemCommand(s string) int {
}
func matchControlSequence(s string) int {
// `\x1b[\\[()][0-9;]*[a-zA-Z@]`
// ^ match starting here
// `\x1b[\\[()][0-9;?]*[a-zA-Z@]`
// ^ match starting here
//
i := 2 // prefix matched in nextAnsiEscapeSequence()
for ; i < len(s) && (isNumeric(s[i]) || s[i] == ';'); i++ {
for ; i < len(s) && (isNumeric(s[i]) || s[i] == ';' || s[i] == '?'); i++ {
}
if i < len(s) {
c := s[i]
@ -125,7 +125,7 @@ func isCtrlSeqStart(c uint8) bool {
// nextAnsiEscapeSequence returns the ANSI escape sequence and is equivalent to
// calling FindStringIndex() on the below regex (which was originally used):
//
// "(?:\x1b[\\[()][0-9;]*[a-zA-Z@]|\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)"
// "(?:\x1b[\\[()][0-9;?]*[a-zA-Z@]|\x1b][0-9];[[:print:]]+(?:\x1b\\\\|\x07)|\x1b.|[\x0e\x0f]|.\x08)"
//
func nextAnsiEscapeSequence(s string) (int, int) {
// fast check for ANSI escape sequences
@ -154,7 +154,7 @@ Loop:
return i - n, i + 1
}
case '\x1b':
// match: `\x1b[\\[()][0-9;]*[a-zA-Z@]`
// match: `\x1b[\\[()][0-9;?]*[a-zA-Z@]`
if i+2 < len(s) && isCtrlSeqStart(s[i+1]) {
if j := matchControlSequence(s[i:]); j != -1 {
return i, i + j