Commit4376fdb

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C comment: clarify why psql's help/exit/quit must alone

Document why no indentation and why no non-whitespace postfix issupported.Backpatch-through: master

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Lines changed: 7 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -237,7 +237,13 @@ MainLoop(FILE *source)`
`237`	`237`	`boolfound_exit_or_quit= false;`
`238`	`238`	`boolfound_q= false;`
`239`	`239`
`240`		`-/* Search for the words we recognize; must be first word */`
	`240`	`+/*`
	`241`	`+ * The assistance words, help/exit/quit, must have no`
	`242`	`+ * whitespace before them, and only whitespace after, with an`
	`243`	`+ * optional semicolon. This prevents indented use of these`
	`244`	`+ * words, perhaps as identifiers, from invoking the assistance`
	`245`	`+ * behavior.`
	`246`	`+ */`
`241`	`247`	`if (pg_strncasecmp(first_word,"help",4)==0)`
`242`	`248`	`{`
`243`	`249`	`rest_of_line=first_word+4;`
`@@ -249,7 +255,6 @@ MainLoop(FILE *source)`
`249`	`255`	`rest_of_line=first_word+4;`
`250`	`256`	`found_exit_or_quit= true;`
`251`	`257`	`}`
`252`		`-`
`253`	`258`	`elseif (strncmp(first_word,"\\q",2)==0)`
`254`	`259`	`{`
`255`	`260`	`rest_of_line=first_word+2;`

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