From 02d2df5790d186f16e0e22becd8107a85f328c2f Mon Sep 17 00:00:00 2001 From: noname Date: Sat, 26 Apr 2014 00:12:41 +0200 Subject: Do not eat ESC character if control string is not properly terminated. Currently tputc handles the case of too long control string waiting for the end of control string. Another case is when there is ESC character is encountered but is not followed by '\\'. In this case st stops processing control string, but ESC character is ignored. After this patch st processes ESC characters in control strings properly. Test case: printf '\e]0;abc\e[1mBOLD\e[0m' Also ^[\ is actually processed in the code that handles ST. According to ECMA-048 ST stands for STRING TERMINATOR and is used to close control strings. --- st.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/st.c b/st.c index cacbe20..d2261e2 100644 --- a/st.c +++ b/st.c @@ -2452,10 +2452,6 @@ tputc(char *c, int len) { csiparse(); csihandle(); } - } else if(term.esc & ESC_STR_END) { - term.esc = 0; - if(ascii == '\\') - strhandle(); } else if(term.esc & ESC_ALTCHARSET) { tdeftran(ascii); tselcs(); @@ -2545,7 +2541,9 @@ tputc(char *c, int len) { tcursor(CURSOR_LOAD); term.esc = 0; break; - case '\\': /* ST -- Stop */ + case '\\': /* ST -- String Terminator */ + if(term.esc & ESC_STR_END) + strhandle(); term.esc = 0; break; default: -- cgit v1.2.3-13-gbd6f