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| author | Bram Moolenaar <Bram@vim.org> | 2019-04-03 21:15:58 +0200 |
|---|---|---|
| committer | Bram Moolenaar <Bram@vim.org> | 2019-04-03 21:15:58 +0200 |
| commit | 5da04ef1b4126cc997e38b58faa5325e7cb83e4f (patch) | |
| tree | 32bd387880cd1ed57c61af8aed68a1b0f29a985b /src/term.c | |
| parent | 796cc42d3a4fc7a940da87831a111eeb6b7a5cf3 (diff) | |
| download | vim-git-5da04ef1b4126cc997e38b58faa5325e7cb83e4f.tar.gz | |
patch 8.1.1105: long escape sequences may be split upv8.1.1105
Problem: Long escape sequences may be split up.
Solution: Assume esccape sequences can be up to 80 bytes long. (Nobuhiro
Takasaki, closes #4196)
Diffstat (limited to 'src/term.c')
| -rw-r--r-- | src/term.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/src/term.c b/src/term.c index ffc988483..d114be978 100644 --- a/src/term.c +++ b/src/term.c @@ -2538,12 +2538,18 @@ termcapinit(char_u *name) } /* - * the number of calls to ui_write is reduced by using the buffer "out_buf" + * The number of calls to ui_write is reduced by using "out_buf". */ #define OUT_SIZE 2047 - /* Add one to allow mch_write() in os_win32.c to append a NUL */ + +// add one to allow mch_write() in os_win32.c to append a NUL static char_u out_buf[OUT_SIZE + 1]; -static int out_pos = 0; /* number of chars in out_buf */ + +static int out_pos = 0; // number of chars in out_buf + +// Since the maximum number of SGR parameters shown as a normal value range is +// 16, the escape sequence length can be 4 * 16 + lead + tail. +#define MAX_ESC_SEQ_LEN 80 /* * out_flush(): flush the output buffer @@ -2660,12 +2666,14 @@ out_char_nf(unsigned c) void out_str_nf(char_u *s) { - if (out_pos > OUT_SIZE - 20) /* avoid terminal strings being split up */ + // avoid terminal strings being split up + if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN) out_flush(); + while (*s) out_char_nf(*s++); - /* For testing we write one string at a time. */ + // For testing we write one string at a time. if (p_wd) out_flush(); } @@ -2694,7 +2702,7 @@ out_str_cf(char_u *s) return; } #endif - if (out_pos > OUT_SIZE - 20) + if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN) out_flush(); #ifdef HAVE_TGETENT for (p = s; *s; ++s) @@ -2762,7 +2770,7 @@ out_str(char_u *s) } #endif /* avoid terminal strings being split up */ - if (out_pos > OUT_SIZE - 20) + if (out_pos > OUT_SIZE - MAX_ESC_SEQ_LEN) out_flush(); #ifdef HAVE_TGETENT tputs((char *)s, 1, TPUTSFUNCAST out_char_nf); |