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Per bug #14441 from Mark Pether, the documentation could be misread, mainly because some of the examples failed to show what happens with a multicharacter "characters to trim" string. Also, while the text description in most of these entries was fairly clear that the "characters" argument is a set of characters not a substring to match, some of them used variant wording that was a bit less clear. trim() itself suffered from both deficiencies and was thus pretty misinterpretable. Also fix failure to explain which of LEADING/TRAILING/BOTH is the default. Discussion: https://postgr.es/m/20161130011710.6539.53657@wrigleys.postgresql.org |
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