From 5d025413767efe93bebe3cadbaeb7906a150d50b Mon Sep 17 00:00:00 2001
From: Christophe Rhodes <csr21@cantab.net>
Date: Fri, 14 Mar 2014 16:26:35 +0000
Subject: [PATCH] implement swank-c-p-c

now users with c-p-c completion style can rejoice!  Matching is a little
hacky, but not too surprising.
---
 swank-c-p-c.R | 15 +++++++++++++
 swank.R       | 61 +++++++++++++++++++++++++++------------------------
 2 files changed, 47 insertions(+), 29 deletions(-)
 create mode 100644 swank-c-p-c.R

diff --git a/swank-c-p-c.R b/swank-c-p-c.R
new file mode 100644
index 0000000..8d33184
--- /dev/null
+++ b/swank-c-p-c.R
@@ -0,0 +1,15 @@
+`swank:completions` <- function(slimeConnection, sldbState, prefix, package) {
+  bits <- strsplit(prefix, "(?=[A-Z._])", perl=TRUE)[[1]];
+  lrx <- literal2rx(bits)
+  ## FIXME: this includes slightly too much .*, because the strsplit
+  ## seems to split before /and/ after the match.
+  rx <- paste(lrx, collapse=".*")
+  matches <- apropos(sprintf("^%s", rx), ignore.case=FALSE)
+  nmatches <- length(matches)
+  if((nmatches == 0) && ((dollar <- regexpr("$", prefix, fixed=TRUE)) > -1)) {
+    
+    symbolFieldsCompletion(globalenv(), prefix, prefix)
+  } else {
+    returnMatches(matches)
+  }
+}
diff --git a/swank.R b/swank.R
index 67fdbbc..d845824 100644
--- a/swank.R
+++ b/swank.R
@@ -470,43 +470,46 @@ computeRestartsForEmacs <- function (sldbState) {
        list())
 }
 
-`swank:simple-completions` <- function(slimeConnection, sldbState, prefix, package) {
-  symbolFieldsCompletion <- function(object, rest) {
-    ## FIXME: this is hacky, ignoring several syntax issues (use of
-    ## and/or necessity for backquoting identifiers: e.g. fields
-    ## containing hyphens)
-    if((dollar <- regexpr("$", rest, fixed=TRUE)) == -1) {
-      matches <- grep(sprintf("^%s", literal2rx(rest)), names(object), value=TRUE)
-      matches <- sprintf("%s$%s", gsub("\\$[^$]*$", "", prefix), matches)
-      returnMatches(matches)
+symbolFieldsCompletion <- function(object, prefix, rest) {
+  ## FIXME: this is hacky, ignoring several syntax issues (use of
+  ## and/or necessity for backquoting identifiers: e.g. fields
+  ## containing hyphens)
+  if((dollar <- regexpr("$", rest, fixed=TRUE)) == -1) {
+    matches <- grep(sprintf("^%s", literal2rx(rest)), names(object), value=TRUE)
+    matches <- sprintf("%s$%s", gsub("\\$[^$]*$", "", prefix), matches)
+    returnMatches(matches)
+  } else {
+    if(exists(substr(rest, 1, dollar-1), object)) {
+      symbolFieldsCompletion(get(substr(rest, 1, dollar-1), object), prefix, substr(rest, dollar+1, nchar(rest)))
     } else {
-      if(exists(substr(rest, 1, dollar-1), object)) {
-        symbolFieldsCompletion(get(substr(rest, 1, dollar-1), object), substr(rest, dollar+1, nchar(rest)))
-      } else {
-        returnMatches(character(0))
-      }
+      returnMatches(character(0))
     }
   }
-  returnMatches <- function(matches) {
-    nmatches <- length(matches)
-    if(nmatches == 0) {
-      list(list(), "")
-    } else {
-      longest <- matches[order(nchar(matches))][1]
-      while(length(grep(sprintf("^%s", literal2rx(longest)), matches)) < nmatches) {
-        longest <- substr(longest, 1, nchar(longest)-1)
-      }
-      list(as.list(matches), longest)
+}
+
+returnMatches <- function(matches) {
+  nmatches <- length(matches)
+  if(nmatches == 0) {
+    list(list(), "")
+  } else {
+    longest <- matches[order(nchar(matches))][1]
+    while(length(grep(sprintf("^%s", literal2rx(longest)), matches)) < nmatches) {
+      longest <- substr(longest, 1, nchar(longest)-1)
     }
+    list(as.list(matches), longest)
   }
-  literal2rx <- function(string) {
-    ## list of ERE metacharacters from ?regexp
-    gsub("([.\\|()[{^$*+?])", "\\\\\\1", string)
-  }
+}
+
+literal2rx <- function(string) {
+  ## list of ERE metacharacters from ?regexp
+  gsub("([.\\|()[{^$*+?])", "\\\\\\1", string)
+}
+
+`swank:simple-completions` <- function(slimeConnection, sldbState, prefix, package) {
   matches <- apropos(sprintf("^%s", literal2rx(prefix)), ignore.case=FALSE)
   nmatches <- length(matches)
   if((nmatches == 0) && ((dollar <- regexpr("$", prefix, fixed=TRUE)) > -1)) {
-    symbolFieldsCompletion(globalenv(), prefix)
+    symbolFieldsCompletion(globalenv(), prefix, prefix)
   } else {
     returnMatches(matches)
   }
-- 
2.39.5