a complete git commandline

Makefile.rkt

@@ -12,8 +12,7 @@
 (target clean
         (for-each (λ (f) (displayln f) (rm-f f)) (list-files "." #px"([.]bak|~)$" #:recursive #t))
         (for-each (λ (d) (displayln d) (rm-rf d)) (list-dirs "." #px"(compiled|doc)$" #:recursive #t))
-        (when (directory-exists? "scribblings")
-          (for-each (λ (f) (displayln f) (rm-f f)) (list-files "scribblings" #px"[.](css|js|html)$")))
+        (for-each (λ (f) (displayln f) (rm-f f)) (list-files "scribblings" #px"[.](css|js|html)$"))
         )
 
 (target package

README.md

@@ -24,6 +24,10 @@ A small command-line-like Git module for Racket, implemented directly on top of
 `git` is an ordinary procedure; command names are symbols. `dgit` performs the
 same operation, displays a compact human-readable result, and returns that result.
 
+For `grep`, the natural `(git 'grep '-i "pattern")` spelling is supported even
+though Racket's reader represents `-i` as the complex number `0-1i`; in grep
+option position that value is interpreted as Git's `-i` flag.
+
 The same operations are available as normal procedures such as `git-status`, `git-add`, `git-commit`, `git-tag`, `git-current-branch`, `git-switch`, and `git-checkout`.
 
 ## HTTPS credentials

info.rkt

@@ -2,7 +2,7 @@
 
 (define collection "git")
 (define pkg-desc "Command-line-like Git operations for Racket, implemented with libgit2")
-(define version "0.2.12")
+(define version "0.2.13")
 (define pkg-authors '("Hans Dijkema"))
 (define license 'MIT)
 

main.rkt

@@ -871,7 +871,10 @@
 
 
 (define (grep-flag? x flag)
-  (and (symbol? x) (eq? x flag)))
+  ;; Racket reads -i as the complex number 0-1i before quote is applied.
+  ;; In git-grep option position, accept that reader form as the Git -i flag.
+  (or (and (symbol? x) (eq? x flag))
+      (and (equal? flag 0-1i) (equal? x 0-1i))))
 
 (define (parse-grep-arguments args)
   (let loop ([rest args] [ignore-case? #f] [invert? #f]

scribblings/git.scrbl

@@ -43,7 +43,7 @@ Calls @racket[git], displays its result in a compact human-readable form, and re
 @defproc[(git-version) string?]{Returns the package version from @tt{info.rkt}. The command form is @racket[(git 'version)]. The version is not duplicated in @tt{main.rkt}; @tt{info.rkt} is the single source of truth.}
 
 @racketblock[
-(git 'version) ; => "0.2.12"
+(git 'version) ; => "0.2.13"
 ]
 
 @section{Repository}
@@ -98,7 +98,7 @@ Calls @racket[git], displays its result in a compact human-readable form, and re
 
 @defstruct*[git-grep-entry ([path string?] [line-number exact-positive-integer?] [line string?])]{Describes one line selected by @racket[git-grep]. Results are always structured this way, regardless of display-oriented flags such as @racket['-n], @racket['-l], or @racket['-c].}
 
-@defproc[(git-grep [argument any/c] ...) (listof git-grep-entry?)]{Searches tracked files in the current worktree, or in an optional revision supplied after the pattern. String patterns are regular expressions. @racket['-i] makes matching case-insensitive and @racket['-v] inverts the match. The flags @racket['-n], @racket['-l], and @racket['-c] do not change the structured result; they control how @racket[dgit] displays it. Binary files are skipped.}
+@defproc[(git-grep [argument any/c] ...) (listof git-grep-entry?)]{Searches tracked files in the current worktree, or in an optional revision supplied after the pattern. String patterns are regular expressions. @racket['-i] makes matching case-insensitive and @racket['-v] inverts the match. The flags @racket['-n], @racket['-l], and @racket['-c] do not change the structured result; they control how @racket[dgit] displays it. Binary files are skipped. Racket's reader normally reads @tt{-i} as the complex number @racket[0-1i]; @racket[git-grep] deliberately recognizes that value in option position as Git's @tt{-i} flag, so the natural @racket['-i] spelling works.}
 
 @racketblock[
 (git 'grep "TODO")

tests/grep-reader.rkt

@@ -0,0 +1,32 @@
+#lang racket/base
+
+(require rackunit
+         "../main.rkt")
+
+;; The Racket reader parses '-i as the complex number 0-1i.  git-grep treats
+;; that value as the Git -i option when it appears in option position.
+(check-equal? '-i 0-1i)
+
+;; Exercise the public argument parser indirectly in a temporary repository.
+(require racket/file)
+
+(define tmp (make-temporary-file "git-command-grep-reader~a" 'directory))
+
+(dynamic-wind
+  void
+  (lambda ()
+    (parameterize ([current-directory tmp])
+      (git 'init)
+      (call-with-output-file "sample.txt"
+        #:exists 'truncate/replace
+        (lambda (out)
+          (displayln "Todo" out)
+          (displayln "other" out)))
+      (git 'add "sample.txt")
+      (define entries (git 'grep '-i "todo"))
+      (check-equal? (length entries) 1)
+      (check-equal? (git-grep-entry-path (car entries)) "sample.txt")
+      (check-equal? (git-grep-entry-line-number (car entries)) 1)
+      (check-equal? (git-grep-entry-line (car entries)) "Todo")))
+  (lambda ()
+    (delete-directory/files tmp #:must-exist? #f)))