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document %M format

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This commit is contained in:
Sergei Golubchik
2015-12-18 13:18:35 +01:00
parent 8d34a29663
commit 7e8e83029f
1 changed files with 5 additions and 1 deletions
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6
include/mysql/service_my_snprintf.h
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@@ -55,7 +55,7 @@
Supported formats are 's' (null pointer is accepted, printed as
"(null)"), 'b' (extension, see below), 'c', 'd', 'i', 'u', 'x', 'o',
'X', 'p' (works as 0x%x), 'f', 'g'.
'X', 'p' (works as 0x%x), 'f', 'g', 'M' (extension, see below).
Standard syntax for positional arguments $n is supported.
@@ -65,6 +65,10 @@
Format 'b': binary buffer, prints exactly <precision> bytes from the
argument, without stopping at '\0'.
Format 'M': takes one integer, prints this integer, space, double quote
error message, double quote. In other words
printf("%M", n) === printf("%d \"%s\"", n, strerror(n))
*/
#ifdef __cplusplus