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D1 Invent "MatchAnyN" option for tab-complete.c's Matches/MatchesCS. · postgrespro/postgres@ef0938f · GitHub
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Invent "MatchAnyN" option for tab-complete.c's Matches/MatchesCS.
This argument matches any number (including zero) of previous words. Use it to replace the common coding pattern if (HeadMatches("A", "B") && TailMatches("X", "Y")) with if (Matches("A", "B", MatchAnyN, "X", "Y")) In itself this feature doesn't do much except (arguably) make the code slightly shorter and more readable. However, it reduces the number of complex if-condition patterns that have to be dealt with in the next commits in this series. While here, restructure the *Matches implementation functions so that the actual work is done in functions that take a char ** array of pattern strings, and the versions taking variadic arguments are thin wrappers around the array ones. This simplifies the new Matches logic considerably. At the end of this patch series, the array functions will be the only ones that are material to performance, so having the variadic ones be wrappers makes sense. Discussion: https://postgr.es/m/2208466.1720729502@sss.pgh.pa.us
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