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Improve tech normalization of plural words #252

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62528db
Use racket/base instead of scheme/base
jackfirth Jul 15, 2020
6a5038b
Improve tech normalization of plural words
jackfirth Jul 15, 2020
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5 changes: 4 additions & 1 deletion scribble-doc/scribblings/scribble/manual.scrbl
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Original file line number Diff line number Diff line change
Expand Up @@ -1791,7 +1791,10 @@ normalized as follows:

@item{A trailing ``ies'' is replaced by ``y''.}

@item{A trailing ``s'' is removed.}
@item{A trailing ``es'' is removed if it was preceded by an ``s'', ``x'',
``z'', ``ch'', or an ``sh''.}

@item{A trailing ``s'' is removed if it was not preceded by an ``s''.}

@item{Consecutive hyphens and whitespaces are all replaced by a
single space.}
Expand Down
23 changes: 15 additions & 8 deletions scribble-lib/scribble/private/manual-tech.rkt
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
#lang scheme/base
#lang racket/base
(require racket/contract/base
"../decode.rkt"
"../struct.rkt"
Expand Down Expand Up @@ -28,13 +28,7 @@
(define (*tech make-elem style doc prefix s key normalize?)
(let* ([c (decode-content s)]
[s (or key (content->string c))]
[s (if normalize?
(let* ([s (string-foldcase s)]
[s (regexp-replace #rx"ies$" s "y")]
[s (regexp-replace #rx"s$" s "")]
[s (regexp-replace* #px"[-\\s]+" s " ")])
s)
s)]
[s (if normalize? (normalize s) s)]
[s (datum-intern-literal s)])
(make-elem style c (list 'tech (doc-prefix doc prefix s)))))

Expand Down Expand Up @@ -74,3 +68,16 @@
#:normalize? [normalize? #t]
. s)
(*tech make-link-element #f doc prefix s key normalize?))

(define (normalize raw-string)
(define folded (string-foldcase raw-string))
;; This logic was derived from the rules for singular and plural words
;; described here: https://www.ef.com/wwen/english-resources/english-grammar/singular-and-plural-nouns/
(define singular
(cond
[(regexp-match? #rx"ies$" folded) (regexp-replace #rx"ies$" folded "y")]
[(regexp-match? #rx"(s|x|z|ch|sh)es$" folded)
(regexp-replace #rx"es$" folded "")]
[(regexp-match? #rx"[^s]s%" folded) (regexp-replace #rx"s$" folded "")]
[else folded]))
(regexp-replace* #px"[-\\s]+" singular " "))