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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 Supported formats are 's' (null pointer is accepted, printed as
"(null)"), 'b' (extension, see below), 'c', 'd', 'i', 'u', 'x', 'o', "(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. Standard syntax for positional arguments $n is supported.
@ -65,6 +65,10 @@
Format 'b': binary buffer, prints exactly <precision> bytes from the Format 'b': binary buffer, prints exactly <precision> bytes from the
argument, without stopping at '\0'. 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 #ifdef __cplusplus