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authorBram Moolenaar <Bram@vim.org>2022-06-06 15:38:21 +0100
committerBram Moolenaar <Bram@vim.org>2022-06-06 15:38:21 +0100
commit44a3f3353e0407e9fffee138125a6927d1c9e7e5 (patch)
tree2f8eab55877ffb8d6b51d8be01aaeeccf71db6e9 /src/ex_docmd.c
parent1f89abf69d2c485c38da9a45161e806de0f86f2f (diff)
patch 8.2.5063: error for a command may go over the end of IObuffv8.2.5063
Problem: Error for a command may go over the end of IObuff. Solution: Truncate the message.
Diffstat (limited to 'src/ex_docmd.c')
-rw-r--r--src/ex_docmd.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/src/ex_docmd.c b/src/ex_docmd.c
index cfb40e8d5c..634a1bcef5 100644
--- a/src/ex_docmd.c
+++ b/src/ex_docmd.c
@@ -3441,9 +3441,17 @@ theend:
static void
append_command(char_u *cmd)
{
- char_u *s = cmd;
- char_u *d;
+ size_t len = STRLEN(IObuff);
+ char_u *s = cmd;
+ char_u *d;
+ if (len > IOSIZE - 100)
+ {
+ // Not enough space, truncate and put in "...".
+ d = IObuff + IOSIZE - 100;
+ d -= mb_head_off(IObuff, d);
+ STRCPY(d, "...");
+ }
STRCAT(IObuff, ": ");
d = IObuff + STRLEN(IObuff);
while (*s != NUL && d - IObuff + 5 < IOSIZE)