22 Truncate a string up to the first occurrence of a marker (keeping the marker).21 Truncate a string at the last occurrence of a marker (removing the marker too).20 Truncate a string at the last occurrence of a marker (keeping the marker).19 Truncate a string at the first occurrence of a marker (removing the marker too).18 Truncate a string at the first occurrence of a marker (keeping the marker).17 Replace only the last occurrence of a character.16 Replace only the first occurrence of a character.15 Delete all lines containing a given string.
14 Delete everything inside a tag pair (removing tags too).13 Delete everything inside a tag pair (keeping tags).8 Remove all trailing spaces and tabs from every line.7 Remove all leading spaces and tabs from every line.
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