From 67ce6946d2b9b6cce5df053f1920d74ee7874e84 Mon Sep 17 00:00:00 2001
From: Marc <marc.esquerra@ynap.com>
Date: Mon, 12 Mar 2018 12:47:47 +0000
Subject: [PATCH 1/4] Add jumpToDefinition and showDoc support for rust (with
 racer)

---
 rc/extra/racer.kak | 50 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/rc/extra/racer.kak b/rc/extra/racer.kak
index 944e9c65..45ecb8fc 100644
--- a/rc/extra/racer.kak
+++ b/rc/extra/racer.kak
@@ -93,3 +93,53 @@ define-command racer-disable-autocomplete -docstring "Disable racer completion"
     remove-hooks window racer-autocomplete
     unalias window complete racer-complete
 }
+
+define-command racer-go-definition -docstring "Jump to where the rust identifier below the cursor is defined" %{
+    %sh{
+        dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-racer.XXXXXXXX)
+        printf %s\\n "set-option buffer racer_tmp_dir ${dir}"
+        printf %s\\n "evaluate-commands -no-hooks %{ write ${dir}/buf }"
+    }
+    %sh{
+        dir=${kak_opt_racer_tmp_dir}
+        (
+            cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
+            racer_data=$(racer --interface tab-text  find-definition ${cursor} ${kak_buffile} ${dir}/buf | head -n 1)
+            racer_match=$(echo "$racer_data" | cut -f1 )
+            if [[ "$racer_match" == "MATCH" ]]; then
+              racer_line=$(echo "$racer_data" | cut -f3 )
+              racer_column=$(echo "$racer_data" | cut -f4 )
+              racer_file=$(echo "$racer_data" | cut -f5 )
+              printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
+              printf %s\\n "set-option buffer readonly true"
+            else
+              printf %s\\n "echo -debug 'racer could not find a definition'"
+            fi
+        )
+    }
+}
+
+define-command racer-show-doc -docstring "Show the documentation about the rust identifier below the cursor" %{
+    %sh{
+        dir=$(mktemp -d "${TMPDIR:-/tmp}"/kak-racer.XXXXXXXX)
+        printf %s\\n "set-option buffer racer_tmp_dir ${dir}"
+        printf %s\\n "evaluate-commands -no-hooks %{ write ${dir}/buf }"
+    }
+    %sh{
+        dir=${kak_opt_racer_tmp_dir}
+        (
+            cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
+            racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} ${kak_buffile} ${dir}/buf | head -n 2 | tail -n 1)
+            racer_match=$(echo "$racer_data" | cut -f1 )
+            printf %s\\n "info '$racer_data'"
+            if [[ "$racer_match" == "MATCH" ]]; then
+              racer_doc=$(echo "$racer_data" | cut -f9 | xargs )
+              racer_doc=$(echo "${racer_doc//\\n/
+}") # This is a bit ugly and probably should be replaced with something better than a new line in the code itself, but I couldn't work how
+              printf %s\\n "info '$racer_doc'"
+            else
+              printf %s\\n "echo -debug 'racer could not find a definition'"
+            fi
+        )
+    }
+}

From 2f41fdb683644aefed4ef2534522c9b54183c08e Mon Sep 17 00:00:00 2001
From: Marc <marc.esquerra@ynap.com>
Date: Tue, 13 Mar 2018 13:52:09 +0000
Subject: [PATCH 2/4] Tweak the bash code on the racer support

---
 rc/extra/racer.kak | 23 ++++++++++++-----------
 1 file changed, 12 insertions(+), 11 deletions(-)

diff --git a/rc/extra/racer.kak b/rc/extra/racer.kak
index 45ecb8fc..57ac37a1 100644
--- a/rc/extra/racer.kak
+++ b/rc/extra/racer.kak
@@ -105,11 +105,11 @@ define-command racer-go-definition -docstring "Jump to where the rust identifier
         (
             cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
             racer_data=$(racer --interface tab-text  find-definition ${cursor} ${kak_buffile} ${dir}/buf | head -n 1)
-            racer_match=$(echo "$racer_data" | cut -f1 )
+            racer_match=$(printf %s\\n "$racer_data" | cut -f1 )
             if [[ "$racer_match" == "MATCH" ]]; then
-              racer_line=$(echo "$racer_data" | cut -f3 )
-              racer_column=$(echo "$racer_data" | cut -f4 )
-              racer_file=$(echo "$racer_data" | cut -f5 )
+              racer_line=$(printf %s\\n "$racer_data" | cut -f3 )
+              racer_column=$(printf %s\\n "$racer_data" | cut -f4 )
+              racer_file=$(printf %s\\n "$racer_data" | cut -f5 )
               printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
               printf %s\\n "set-option buffer readonly true"
             else
@@ -128,15 +128,16 @@ define-command racer-show-doc -docstring "Show the documentation about the rust
     %sh{
         dir=${kak_opt_racer_tmp_dir}
         (
-            cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
+            printf -v NEWLINE '\n'
+            cursor="${kak_cursor_line} ${kak_cursor_column}"
             racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} ${kak_buffile} ${dir}/buf | head -n 2 | tail -n 1)
-            racer_match=$(echo "$racer_data" | cut -f1 )
-            printf %s\\n "info '$racer_data'"
+            racer_match=$(printf %s\\n "$racer_data" | cut -f1)
+            printf %s\\n "info %@.$racer_match.@"
             if [[ "$racer_match" == "MATCH" ]]; then
-              racer_doc=$(echo "$racer_data" | cut -f9 | xargs )
-              racer_doc=$(echo "${racer_doc//\\n/
-}") # This is a bit ugly and probably should be replaced with something better than a new line in the code itself, but I couldn't work how
-              printf %s\\n "info '$racer_doc'"
+              racer_doc=$(printf %s\\n "$racer_data" | cut -f9 | xargs )
+              racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/\\\n/\\$NEWLINE/g")
+              racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/@/\\@/g")
+              printf %s\\n "info %@$racer_doc@"
             else
               printf %s\\n "echo -debug 'racer could not find a definition'"
             fi

From 2bf8941d99f18f7a1a55711dd727f069b6d63b0f Mon Sep 17 00:00:00 2001
From: Marc <marc.esquerra@ynap.com>
Date: Wed, 14 Mar 2018 15:56:25 +0000
Subject: [PATCH 3/4] Clean racer support functions

---
 rc/extra/racer.kak | 52 ++++++++++++++++++++--------------------------
 1 file changed, 23 insertions(+), 29 deletions(-)

diff --git a/rc/extra/racer.kak b/rc/extra/racer.kak
index 57ac37a1..8ca9eafc 100644
--- a/rc/extra/racer.kak
+++ b/rc/extra/racer.kak
@@ -102,20 +102,18 @@ define-command racer-go-definition -docstring "Jump to where the rust identifier
     }
     %sh{
         dir=${kak_opt_racer_tmp_dir}
-        (
-            cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
-            racer_data=$(racer --interface tab-text  find-definition ${cursor} ${kak_buffile} ${dir}/buf | head -n 1)
-            racer_match=$(printf %s\\n "$racer_data" | cut -f1 )
-            if [[ "$racer_match" == "MATCH" ]]; then
-              racer_line=$(printf %s\\n "$racer_data" | cut -f3 )
-              racer_column=$(printf %s\\n "$racer_data" | cut -f4 )
-              racer_file=$(printf %s\\n "$racer_data" | cut -f5 )
-              printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
-              printf %s\\n "set-option buffer readonly true"
-            else
-              printf %s\\n "echo -debug 'racer could not find a definition'"
-            fi
-        )
+        cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
+        racer_data=$(racer --interface tab-text  find-definition ${cursor} "${kak_buffile}" "${dir}/buf" | head -n 1)
+        racer_match=$(printf %s\\n "$racer_data" | cut -f1 )
+        if [ "$racer_match" = "MATCH" ]; then
+          racer_line=$(printf %s\\n "$racer_data" | cut -f3 )
+          racer_column=$(printf %s\\n "$racer_data" | cut -f4 )
+          racer_file=$(printf %s\\n "$racer_data" | cut -f5 )
+          printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
+          #printf %s\\n "set-option buffer readonly true"
+        else
+          printf %s\\n "echo -debug 'racer could not find a definition'"
+        fi
     }
 }
 
@@ -127,20 +125,16 @@ define-command racer-show-doc -docstring "Show the documentation about the rust
     }
     %sh{
         dir=${kak_opt_racer_tmp_dir}
-        (
-            printf -v NEWLINE '\n'
-            cursor="${kak_cursor_line} ${kak_cursor_column}"
-            racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} ${kak_buffile} ${dir}/buf | head -n 2 | tail -n 1)
-            racer_match=$(printf %s\\n "$racer_data" | cut -f1)
-            printf %s\\n "info %@.$racer_match.@"
-            if [[ "$racer_match" == "MATCH" ]]; then
-              racer_doc=$(printf %s\\n "$racer_data" | cut -f9 | xargs )
-              racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/\\\n/\\$NEWLINE/g")
-              racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/@/\\@/g")
-              printf %s\\n "info %@$racer_doc@"
-            else
-              printf %s\\n "echo -debug 'racer could not find a definition'"
-            fi
-        )
+        cursor="${kak_cursor_line} ${kak_cursor_column}"
+        racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} "${kak_buffile}" "${dir}/buf" | head -n 2 | tail -n 1)
+        racer_match=$(printf %s\\n "$racer_data" | cut -f1)
+        if [ "$racer_match" = "MATCH" ]; then
+          racer_doc=$(printf %s\\n "$racer_data" | cut -f9 )
+          racer_doc=$(printf %s\\n "$racer_doc" | sed -e 's/^"\(.*\)"$/\1/g')
+          racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/@/\\\\@/g")
+          printf "info %%@$racer_doc@"
+        else
+          printf %s\\n "echo -debug 'racer could not find a definition'"
+        fi
     }
 }

From 898dfea8a15bc1b06a0e0f16c601aa7e6e3b4fb8 Mon Sep 17 00:00:00 2001
From: Marc <marc.esquerra@ynap.com>
Date: Thu, 15 Mar 2018 20:37:27 +0000
Subject: [PATCH 4/4] racer-go-definition forces readonly on files external to
 the project

---
 rc/extra/racer.kak | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/rc/extra/racer.kak b/rc/extra/racer.kak
index 8ca9eafc..6e2b07b5 100644
--- a/rc/extra/racer.kak
+++ b/rc/extra/racer.kak
@@ -104,13 +104,20 @@ define-command racer-go-definition -docstring "Jump to where the rust identifier
         dir=${kak_opt_racer_tmp_dir}
         cursor="${kak_cursor_line} $((${kak_cursor_column} - 1))"
         racer_data=$(racer --interface tab-text  find-definition ${cursor} "${kak_buffile}" "${dir}/buf" | head -n 1)
+
         racer_match=$(printf %s\\n "$racer_data" | cut -f1 )
         if [ "$racer_match" = "MATCH" ]; then
           racer_line=$(printf %s\\n "$racer_data" | cut -f3 )
           racer_column=$(printf %s\\n "$racer_data" | cut -f4 )
           racer_file=$(printf %s\\n "$racer_data" | cut -f5 )
           printf %s\\n "edit -existing '$racer_file' $racer_line $racer_column"
-          #printf %s\\n "set-option buffer readonly true"
+          if [[ "$racer_file" == ${RUST_SRC_PATH}* ]]; then
+            printf %s\\n "set-option buffer readonly true" # The definition resides on the standard library, and the new buffer should be readonly
+          else
+            if [[ "$racer_file" == ${HOME}/.cargo/registry/src* ]]; then
+              printf %s\\n "set-option buffer readonly true" # The definition resides on an external crate, and the new buffer should be readonly
+            fi
+          fi
         else
           printf %s\\n "echo -debug 'racer could not find a definition'"
         fi
@@ -126,12 +133,13 @@ define-command racer-show-doc -docstring "Show the documentation about the rust
     %sh{
         dir=${kak_opt_racer_tmp_dir}
         cursor="${kak_cursor_line} ${kak_cursor_column}"
-        racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} "${kak_buffile}" "${dir}/buf" | head -n 2 | tail -n 1)
+        racer_data=$(racer --interface tab-text  complete-with-snippet  ${cursor} "${kak_buffile}" "${dir}/buf" | sed -n 2p )
         racer_match=$(printf %s\\n "$racer_data" | cut -f1)
         if [ "$racer_match" = "MATCH" ]; then
           racer_doc=$(printf %s\\n "$racer_data" | cut -f9 )
-          racer_doc=$(printf %s\\n "$racer_doc" | sed -e 's/^"\(.*\)"$/\1/g')
-          racer_doc=$(printf %s\\n "$racer_doc" | sed -e "s/@/\\\\@/g")
+          racer_doc=$(printf %s\\n "$racer_doc" |
+            sed -e 's/^"\(.*\)"$/\1/g' | # Remove leading and trailing quotes
+            sed -e "s/@/\\\\@/g")        # Escape all @ so that it can be properly used in the string expansion
           printf "info %%@$racer_doc@"
         else
           printf %s\\n "echo -debug 'racer could not find a definition'"