id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
10131	[string_algo] trim_all_*() functions leaves a single asterisk in the string.	wburkhardt@…	Marshall Clow	"I came along this problem while I wanted to reformat a string, to form a proper filename/path. Using string_algo's boost::trim_all* variants, I came across the problem when the originating string contained asterisk characters. The trim function would *always* leave at least one asterisk in the resulting string. 

Example source string: 
{{{""TEST_**???***_TEST""}}}

Desired result is: 
{{{""TEST__TEST""}}}


Using trim_all_*() 
{{{
result = trim_all_copy_if(source_string, is_any_of(""\\/:*?\""<>|""));
}}}
result:
{{{
""TEST_*_TEST""
}}}

escaping the asterisk in the predicate did not help:
{{{
result = trim_all_copy_if(source_string, is_any_of(""\\/:\\*?\""<>|""));
}}}
same result: 
{{{
""TEST_*_TEST""
}}}

However when using a trim_fill_*() variant with an empty replacement string:
{{{
result = trim_fill_copy_if(test_sequence, """", is_any_of(""\\/:*?\""<>|""));
}}}
It did deliver the desired result:
{{{
""TEST__TEST""
}}}

This unexpected behavior of trim_all_*() is IMHO a bug. If not, it should probably be added to the documentation.
 

example code attached."	Bugs	closed	To Be Determined	string_algo	Boost 1.55.0	Not Applicable	invalid